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April 19, 2014

Search: Hypothesis - Statistics

Number of results: 17,296

Statistics
If my p-value = .322 and my significant level is .05 , then My Null Hypothesis is rejected and I must accept the Alternative hypothesis My Null Hypothesis is not rejected My Alternative hypothesis becomes the new Null Hypothesis I cannot make a decision until I know my sample ...
Tuesday, June 15, 2010 at 7:41pm by John

psychology
It would depend on your topic or hypothesis. What did you do to test your hypothesis? What statistics were used? What values did you find when using the statistics? I hope this helps.
Thursday, June 28, 2012 at 11:49pm by PsyDAG

Statistics
Does the null hypothesis for a nondirectional alternative hypothesis differ from the null hypothesis for a directional alternative hypothesis? Explain. I have no idea how to state the answer for this.
Saturday, May 24, 2008 at 12:54pm by Christine

Statistics
What are the steps espoused by Applied Statistics in Business and Economics for formal hypothesis testing? Explain why the sequence is important. What might happen if the hypothesis test is performed before the researcher has decided on the significance level?
Tuesday, November 2, 2010 at 11:05am by Kathy

statistics
Use the given information to find the P-value. Also, use a 0.05 significance level and state the conclusion about the null hypothesis (reject the null hypothesis or fail to reject the null hypothesis). 1) Vvith H1: p * 0.733, the test statistic is z = 2.09. A) 0.0183; fail to ...
Wednesday, April 21, 2010 at 6:11am by Marc

Statistics
are the following statements, Ho:=10 and Ha:equal to or less than, a valid pair of null and alternative hypothesis?assume that in a hypothesis test with null hypothesis Ho : u = 12.0 at a = 0.10, that a value of 16.0 for the sample mean results in the null hypothesis being ...
Saturday, November 19, 2011 at 1:28pm by Cynthia

Statistics
The null hypothesis is: a. Always contains a > in the equation b. Not needed c. The alternative hypothesis d. The hypothesis of no difference e. Always contain a < in the equation
Wednesday, September 15, 2010 at 9:15am by Beata Chmielewska

statistics
Formulate a hypothesis statement and perform the five-step hypothesis testing procedure
Sunday, August 8, 2010 at 7:47pm by sue

STAT
Given a sample size of 18, with sample mean 660.3 and sample standard deviation 95.9, we are to perform the following hypothesis testing: Null Hypothesis H0 : = 700 Research Hypothesis H1 : ≠ 700 What is the test statistics? At a 0.05 significance level, what is ...
Saturday, October 12, 2013 at 12:27pm by Jacky

STAT
Given a sample size of 18, with sample mean 660.3 and sample standard deviation 95.9, we are to perform the following hypothesis testing: Null Hypothesis H0 : = 700 Research Hypothesis H1 : ≠ 700 What is the test statistics? At a 0.05 significance level, what is ...
Sunday, October 13, 2013 at 9:15am by Jacky

Statistics
True or False In most research situations, the goal of a hypothesis test is to reject the null hypothesis.
Friday, December 20, 2013 at 9:24pm by lyn

Statistics
Which testing a statistical hypothesis with significance level of alpha 0.05, when do you reject the NULL hypothesis (HO)?
Wednesday, September 15, 2010 at 9:31am by Beata Chmielewska

Hypothesis Statistics
A two-tailed test is conducted at the 5% significance level. What is the P-value required to reject the null hypothesis?
Sunday, September 9, 2012 at 12:46am by Courtney

Statistics
The null hypothesis will be that all population means are equal, the alternative hypothesis is that at least one mean is different.
Sunday, December 15, 2013 at 6:02pm by Alexis

Statistics
A statistical test is performed, and its P-value turns out to be about 3%. Which of the following must be true? Pick all that are correct. The null hypothesis is true. There is about a 3% chance that the null hypothesis is true. The alternative hypothesis is true. There is ...
Sunday, August 4, 2013 at 11:19am by Audrey

statistics
Complete the hypothesis test: null hypothesis = 52, alternative hypothesis =<52, a=0.01 usin data set 45,47,46,58,59,49,46,54,53,52,47,41
Monday, July 19, 2010 at 11:45am by Shelly

statistics
I hope this helps. Acceptance or rejection of the null hypothesis depends on what level of significance you are using (e.g., P.05, P.01) and whether you are using a one-tailed or two-tailed test. If the Z score has that probability or less, reject the null hypothesis. If ...
Tuesday, February 14, 2012 at 9:22pm by Lacinda

STATS
Given a sample size of 18, with sample mean 660.3 and sample standard deviation 95.9 we are to perform the following hypothesis test. Null Hypothesis H0: = 700 Alternative Hypothesis H0: 700 At significance level 0.05 1. What is the critical value for this test? ...
Tuesday, March 30, 2010 at 12:27am by Mary

Statistics
Acceptance or rejection of the null hypothesis depends on what level of significance you are using (e.g., P≤.05, P≤.01) and whether you are using a one-tailed or two-tailed test. If the Z score has that probability or less, reject the null hypothesis. If not, ...
Tuesday, June 12, 2012 at 8:57pm by PsyDAG

statistics
The proportion of adults in the US with basic literary skills is 43%. If a hypothesis test is performed on this, how should you (in terms of the claim) interpret a decision that rejects the null hypothesis?
Wednesday, June 13, 2012 at 12:26pm by linds

statistics
I'll get you started. Hypotheses: Ho: = 12 --> this is the null hypothesis Ha: ≠ 12 ---> this is the alternate or alternative hypothesis Note: Null hypothesis always uses an equals sign. The alternate or alternative hypothesis in this case uses a "does not ...
Tuesday, February 25, 2014 at 5:31pm by MathGuru

Statistics
in a hypothesis test conducted at a level of significance of 2%a p-value of 0.01280 was obtained the best interpation of the hypothesis test is
Monday, December 12, 2011 at 10:09pm by ron

Statistics
Cholesterol levels of adult males are approximately normally distributed with a mean of mg/dL and a listed variance of . Some researchers claim that the variance of cholesterol levels of adult males is less than . Suppose that we want to carry out a hypothesis test to see if ...
Friday, April 29, 2011 at 3:04pm by Michelle

Statistics
P = probability that rejecting the null hypothesis is due solely to chance factors. What is your null hypothesis? If Ho = no difference, then I would agree with you.
Friday, July 19, 2013 at 6:42pm by PsyDAG

Research and Statistics
Explain how to accept and reject the null? How to identify the null and alternative hypothesis for t-tests in both statistical and experimental hypothesis?
Sunday, February 9, 2014 at 3:38pm by Tiffany

statistics
Calculations for a hypothesis test depend on what kind of test you are doing. There are many different kinds of tests. The significance level is used to reject or fail to reject the null hypothesis in a hypothesis test. If you use a z-table for a one-tailed z-test at 0.05 ...
Friday, September 26, 2008 at 12:00pm by MathGuru

statistics
In a chi-squared test of a contingency table, the value of the test statistic was =12.678, and the critical value at = 0.025 was 14.4494. Thus, (Points: 2) A) we fail to reject the null hypothesis at = 0.025 B) we reject the null hypothesis at = 0.025 C) we dont have enough ...
Tuesday, August 18, 2009 at 12:36pm by Danny

Statistics
Which of the following is an accurate definition of a Type II error? a. rejecting a false null hypothesis b. rejecting a true null hypothesis c. failing to reject a false null hypothesis d. failing to reject a true null hypothesis
Friday, December 20, 2013 at 8:33am by Lyndyc

statistics
he mean height of a certain kind of plant is 190 centimeters. Suppose we want to carry out a hypothesis test to see if the mean height when these plants are treated with a certain chemical differs from 190 . State the null hypothesis and the alternative hypothesis that we ...
Tuesday, March 6, 2012 at 10:16pm by ronald

Hypothesis Statistics
Ho: = 18.4 -->population mean is equal to 18.4 Ha: < 18.4 -->population mean is less than 18.4 This would be a one-tailed test because the alternative hypothesis is showing a specific direction. Note: The null hypothesis always uses an equals sign!
Sunday, September 9, 2012 at 12:26am by MathGuru

statistics
if the null hypothesis is that the mean is 3218, the alternative hypothesis is that the mean > 3228, and the sample mean is x= 3342, the sample standard deviation is s=287, the sample size is n= 42, and α= 0.01 a. calculate the z test statistic. b. what is the p-value...
Sunday, April 29, 2012 at 3:11pm by emily

statistics
Given a sample size of 38, with sample mean 660.3 and sample standard deviation 95.9 we are to perform the following hypothesis test. Null Hypothesis H0: = 700 Alternative Hypothesis H0: 700 At significance level 0.05 3. Calculate the test statistics (Tip: this is the...
Monday, August 9, 2010 at 5:05pm by Scott

statistics
Ho: = ? Ha: does not equal ? < ? > ? Ho is the null hypothesis. Ha is the alternate hypothesis. The question mark is the value for you to fill in. One of the three is the correct one for the alternate hypothesis. Read the question carefully to determine which one...
Tuesday, October 5, 2010 at 4:14pm by MathGuru

Statistics
Here is one way you might do this problem: Null hypothesis is that the coin is fair. Ho: p = .5 Alternate hypothesis is that the coin is unfair. Ha: p not equal to .5 Using the binomial formula: P(x) = (nCx)(p^x)[q^(n - x)] ...where n = number of coin tosses, x = number of ...
Sunday, June 6, 2010 at 3:34pm by MathGuru

Statistics
Post a null hypothesis that would use a t test statistical analysis.. Use the same hypothetical situation taken in the t test hypothesis, and turn it into a null hypothesis using a one-way ANOVA analysis and a two-way ANOVA.
Thursday, July 11, 2013 at 8:29pm by Rey

statistics
Post a null hypothesis that would use a t test statistical analysis.. Use the same hypothetical situation taken in the t test hypothesis, and turn it into a null hypothesis using a one-way ANOVA analysis and a two-way ANOVA.
Wednesday, March 5, 2014 at 11:22am by Anonymous

statistics
Post a null hypothesis that would use a t test statistical analysis.. Use the same hypothetical situation taken in the t test hypothesis, and turn it into a null hypothesis using a one-way ANOVA analysis and a two-way ANOVA.
Wednesday, March 5, 2014 at 11:49am by Anonymous

Statistics
In an analysis of variance, if the null hypothesis is true then: - The research hypothesis is also true -You will need fewer participants for the experiment - There is less variance among the sample means than if the null hypothesis was not true - The within-group estimate of ...
Sunday, October 11, 2009 at 10:07am by Trey

statistics
You have no data indicated, probably because copy and paste does not work. Ho = null hypothesis = no difference H1 = alternate hypothesis = SD < ? I hope this helps a little. If not, repost with adequate data.
Saturday, February 27, 2010 at 8:02pm by PsyDAG

Statistics
a) Alpha = .05 means that the probability of rejecting the null hypothesis in error = 5%. By accepting the alternate hypothesis, you are assuming that these results are not included in that 5%. b) It will reduce the probability of alpha error, but it will increase the ...
Sunday, December 2, 2012 at 1:11pm by PsyDAG

Statistics
Using the numerical data for your team project, conduct a two sample, two-tailed hypothesis test for the mean, with a 0.05 level of significance. Find and interpret each step. H0: H1: Test statistic = Critical value = p-value = Reject the null hypothesis or do not reject the ...
Sunday, July 8, 2012 at 1:12pm by Anita

stats
A statistics practitioner wishes to test the following hypothesis: H0 : = 600 against H1 : < 600 A sample of 50 observations yielded the statistics: mean x = 585 and standard deviation sx = 45. The test statistic of a test to determine whether there is enough evidence ...
Wednesday, March 31, 2010 at 1:19pm by joseph

Statistics
Let me see if I understand this: ---------------------------------------- null hypothesis: an observed difference is only due to chance - not because a particular variable affects another one alternate hypothesis: an observed difference is due to one variable affecting another...
Tuesday, December 8, 2009 at 11:03pm by Sam

statistics
The claim: mean < 900 other option: mean > or = 900 The null hypothesis is the one with an equal sign... Your null hypothesis would be mean=900 Your alt. hypothesis would be mean<900 The alt. hypothesis is the claim.
Friday, December 9, 2011 at 3:44pm by Katie

statistics
If you are running a hypothesis test using a null and an alternate hypothesis, then yes, you compare a test statistic to a critical value to determine whether or not to reject the null. You then draw conclusions on your findings. I hope this helps and is what you were asking.
Monday, January 20, 2014 at 3:30pm by MathGuru

statistics
How is the rejection region defined and how is that related to the z-score and the p value? When do you reject or fail to reject the null hypothesis? Why do you think statisticians are asked to complete hypothesis testing? Can you think of examples in courts, in medicine, or ...
Tuesday, February 14, 2012 at 9:22pm by Jay

Statistics
How is the rejection region defined and how is that related to the z-score and the p value? When do you reject or fail to reject the null hypothesis? Why do you think statisticians are asked to complete hypothesis testing? Can you think of examples in courts, in medicine, or ...
Tuesday, June 12, 2012 at 8:57pm by Anonymous

Statistics
How is the rejection region defined and how is that related to the z-score and the p value? When do you reject or fail to reject the null hypothesis? Why do you think statisticians are asked to complete hypothesis testing? Can you think of examples in courts, in medicine, or ...
Thursday, December 12, 2013 at 12:16am by Tangy

statistics
If the null hypothesis for the example survey posted is "There is no correlation between level of drug use and satisfaction with one's personal life." What are the three possible alternative hypotheses that could be stated, using only the variables and statistical test ...
Wednesday, July 18, 2012 at 7:38pm by Trip

statistics
The researcher wanted to test the hypothesis that Ho: μ=3, knowing the population, which was normal, had a variance of 1.00. -- How powerful would this test be against the alternative hypothesis that Ha: μ=4, given that n=15, α = .05
Wednesday, June 4, 2008 at 9:01pm by Lezlie

statistics
I assume you can calculate the means and standard deviations. In explaining the difference between means, you might mention the null hypothesis and alternate hypothesis (two-tailed or one-tailed), along with the probability of alpha (type I) error (rejecting null hypothesis ...
Monday, June 29, 2009 at 8:06pm by PsyDAG

statistics
Needing some help to clarify this problem and help finding the right answer. _b___ 2. Which of the following accurately describes the critical region? a. outcomes with a very low probability if the null hypothesis is true b. outcomes with a high probability if the null ...
Sunday, December 29, 2013 at 10:58am by Lyn

statistics
Briefly explain how increasing sample size influences each of the following. Assume that all other factors are held constant. a. The size of the z- score in a hypothesis test. b. The size of Cohens d. c. The power of a hypothesis test.
Friday, March 18, 2011 at 11:30pm by Melissa Williams

statistics
Briefly explain how increasing sample size influences each of the following. Assume that all other factors are held constant. a. The size of the z- score in a hypothesis test. b. The size of Cohens d. c. The power of a hypothesis test.
Friday, March 18, 2011 at 11:48pm by Melissa Williams

statistics
You may want to check this with a statistics text, but here is one way you might approach this problem. This looks like a hypothesis test involving two variances (standard deviation is the square root of the variance). The null hypothesis would be the ratio of the two ...
Monday, August 18, 2008 at 11:40am by MathGuru

Statistics
Please Help I'm desperate! Complete the hypothesis test with alternative hypothesis d < 0 based on the paired data that follow and d = M - N. Use = 0.02. Assume normality. M 48 47 67 79 73 66 N 52 55 68 87 78 70 (a) Find t. (Give your answer correct to two decimal places...
Monday, October 28, 2013 at 10:02pm by Casey

PHi103
Karl Popper advocates, as a more efficient way to examine a scientific hypothesis, which of the following? a)Gather as much data as possible supporting the hypothesis b)Fake the data c)Try to show the hypothesis is false d)Meditate on what the hypothesis really means I believe...
Sunday, March 11, 2012 at 7:08pm by Ashley

PHI 103
Kari Popper advocates, as a more efficient way to examine a scientific hypothesis, which of the following? A) Gather as much data as possible supporting the hypothesis. B) Fake the data C) Try to show the hypothesis is false. D) Meditate on what the hypothesis really means. ...
Tuesday, May 15, 2012 at 1:29pm by shelley

Statistics
The null hypothesis,H0:u=48,was tested against the alternative hypothesis,H1:u>48.A sample of 75 resulted in a calculated p-value of 0.102.if standard deviation=3.5,the value of the sample mean is?need help
Wednesday, March 23, 2011 at 9:48pm by Joel

Statistics
-If the null hypothesis were true, there would be about a 3% chance of getting data that were like those that were observed in the sample or even further in the direction of the alternative. -The P-value of about 3% was computed assuming that the null hypothesis was true
Sunday, August 4, 2013 at 11:19am by Anonymous

statistics
A researcher has collected statistics pretest scores for students representing 3 different age groups 18-30 31-45 45 and up 3 5 10 7 10 2 9 9 8 6 8 8 4 6 5 Do hypothesis test using ANOVA to find if significant difference. Use alpha .05. All hypothesis steps adn find degrees of...
Tuesday, December 13, 2011 at 2:49pm by Malia

applied statistics
What are the steps espoused by the Applied Statistics in Business and Economics for formal hypothesis testing? Provide examples.
Sunday, February 20, 2011 at 4:29am by Anonymous

Behavioral Statistics
I need someone to explain HOW to do this..I don't want just the answer I have got to figure out how to do this before my mid-term, and I'm completely clueless! 3. One of the major U.S. tire makers wishes to review its warranty for their rainmaker tire. The warranty is for 40,...
Monday, February 10, 2014 at 9:23pm by Jen

statistics for behavioral sciences
In a one- to two-page Microsoft Word document, for each hypothesis listed indicate: Whether the appropriate analysis would be a one-tailed test or a two-tailed test. A type I and type II error, given the context of the hypothesis. Hypothesis: The three treatments tested differ...
Tuesday, February 21, 2012 at 10:04am by troy

statistics for behavioral sciences
In a one- to two-page Microsoft Word document, for each hypothesis listed indicate: Whether the appropriate analysis would be a one-tailed test or a two-tailed test. A type I and type II error, given the context of the hypothesis. Hypothesis: The three treatments tested differ...
Tuesday, February 21, 2012 at 10:04am by troy

Statistics
okay I am sorry but that is why I asked this question because I dont understand what all that means. Im gonna guess if the p value is not below 0.05 then it Fails to reject the Null Hypothesis and if it is about 0.05 then it just rejects or fails the null hypothesis right
Saturday, November 17, 2007 at 2:49pm by LT

Math-Statistics
Without knowing the specific problem, it is difficult to say. The null hypothesis (Ho) would indicate that the two values were equal. Depending on how the specific problem is stated, the answer for the alternative hypothesis (H1) could be B, C or E. I hope this helps. If not, ...
Saturday, December 5, 2009 at 7:15pm by PsyDAG

statistics
I've been trying to work out these problems for about an hour.. I was given multiple choice answers but cannot get my answers even near the ones that were given to me. Here they are First problem: A. z = 0.75, fail to reject H0. B. z = 1.94, fail to reject H0. C. z = 1.94, ...
Friday, December 27, 2013 at 2:22pm by Crystal

statistics
Here are a few hints: 1. The null hypothesis (Ho) always includes an equals sign in its statement. 2. The alternative hypothesis (Ha) uses less than, greater than, or does not equal in its statement. Look for clues in setting up your hypotheses. For example, in each problem, ...
Sunday, September 30, 2012 at 11:09am by MathGuru

statistics
I'll give you a few hints. Try a two-sample z-test on this data since the sample sizes are fairly large. In symbolic form, the null hypothesis would state the population means are equal and the alternate hypothesis would state the populations are not equal. If the null is ...
Saturday, May 29, 2010 at 5:35pm by MathGuru

probability and statistics I NEED HELP
A six-sided die is rolled 20 times and a 5 is rolled 9 times. a) State a null and alternative hypothesis for the die being fair. b) Can the null hypothesis be rejected at the .01 significance level?
Tuesday, May 31, 2011 at 10:07pm by Julie

Statistics
Here might be one way to do this problem: Null hypothesis is that the coin is fair. Ho: p = .5 Alternate hypothesis is that the coin is unfair. Ha: p not equal to .5 Using the binomial formula: P(x) = (nCx)(p^x)[q^(n - x)] ...where n = number of coin tosses, x = number of ...
Sunday, June 8, 2008 at 7:35pm by MathGuru

Bio
1. A control group differs from an experimental group: A. in the number of test organisms used. B. by the independent variable. C. in several ways. D. in no way. is it A 2. A theory and a hypothesis are different in that: A. you must have a theory before you can form a ...
Wednesday, July 10, 2013 at 2:19pm by Amy

7th grade science hypothesis question
I would disagree with Kevin, because your hypothesis is an educated guess. For a hypothesis there is no yes or no answer. Her hypothesis may be incorrect, but you must remember it is simply a guess, if she had prior knowledge to believe the water would become cooler, then she ...
Monday, September 8, 2008 at 3:35pm by Lisa

statistics
You can probably use a One-Way Anova test for this data. The null hypothesis would be that all means are equal; the alternate hypothesis would be that the means are not equal. If the means are not equal, then there are differences between the groups. You can also calculate the...
Saturday, July 18, 2009 at 11:58am by MathGuru

Science (Hypothesis)
The null hypothesis is the hypothesis of no difference, while the hypothesis is what you expect to occur, right? So, what if what you expect to occur is the null? Can you do this? For example, Null: Mice prefer areas along the wall and areas along the edges equally. Hypothesis...
Tuesday, September 20, 2011 at 9:48am by Jackie

psychology statistics
P = probability that the results would occur solely on the basis of chance (alpha error). This is the likelihood of rejecting the null hypothesis, when the null hypothesis is really true. Check various research projects to get an idea of which level of significance is used. ...
Thursday, February 25, 2010 at 12:18pm by PsyDAG

statistics
In hypothesis testing, why are verbal problem statements converted to numerical problem statements? Why is it important to identify the parameter when converting a problem statement from verbal to numerical? Why do a null and alternative hypothesis have to be mutually exclusive?
Thursday, March 11, 2010 at 10:20am by pebbles

statistics
In hypothesis testing, why are verbal problem statements converted to numerical problem statements? Why is it important to identify the parameter when converting a problem statement from verbal to numerical? Why do a null and alternative hypothesis have to be mutually ...
Thursday, March 11, 2010 at 10:20am by victor

statistics
Cholesterol levels of adult males are approximately normally distributed with a mean of mg/dL and a listed standard deviation of . Some researchers claim that the standard deviation of cholesterol levels of adult males is less than . Suppose that we want to carry out a ...
Saturday, February 27, 2010 at 8:02pm by anaya

statistics
What is the alternative hypothesis for a null hypothesis stating that the average time a person keeps a cell phone is at most three years. Answer: Ha: mu > 3 State the null and alternative hypotheses for the following: You are investigating a complaint that "special ...
Thursday, January 26, 2012 at 1:54am by Anonymous

statistics
Since x has a normal distribution, you can use a z-test for your data. Formula: z = (sample mean - population mean)/(standard deviation divided by the square root of the sample size) Hypotheses (percentages are converted to decimal form): Ho: = .067 -->null hypothesis Ha...
Saturday, July 24, 2010 at 5:13pm by MathGuru

Psychological Statistics
A researcher predicts that watching a film on institutionalization will change students attitudes about chronically mentally ill patients. The researcher randomly selects a class of 36 students, shows them the film, and gives them a questionnaire about their attitudes. The ...
Monday, February 6, 2012 at 6:52pm by Patience

Psychological Statistics
A researcher predicts that watching a film on institutionalization will change students attitudes about chronically mentally ill patients. The researcher randomly selects a class of 36 students, shows them the film, and gives them a questionnaire about their attitudes. The ...
Monday, February 20, 2012 at 6:46pm by Patience

Psychological Statistics
A researcher predicts that watching a film on institutionalization will change students attitudes about chronically mentally ill patients. The researcher randomly selects a class of 36 students, shows them the film, and gives them a questionnaire about their attitudes. The ...
Thursday, March 1, 2012 at 12:30am by Patience

Statistics
1. P = .05 means the the probability of alpha error (rejecting the null hypothesis when it is really true) is 5 times out of 100. Whatever significance level you use is a cutting point for accepting or rejecting your null hypothesis. 2. If there is a significant relationship, ...
Wednesday, June 16, 2010 at 3:59am by PsyDAG

Statistics-hypothesis testing
thank you
Tuesday, December 13, 2011 at 8:05pm by Jennifer

statistics
What hypothesis are you testing?
Wednesday, July 11, 2012 at 2:40pm by PsyDAG

Statistics
Problem 1 The null hypothesis is: The proportion of plants in Category A is expected to be 9/16; the difference in the sample is due to chance. Problem 2 The alternative hypothesis is: The model is good. Problem 4 The chi-square statistic is closest to 2.5 Problem 5 Degrees of...
Saturday, August 17, 2013 at 8:39am by Anonymous

statistics
The owner of a bottling company is considering buying a new bottling machine. He has been testing two different machines that are being considered. After collecting 300 samples from each machine over several weeks, he was able to conduct a two sample z test.<p>He decided...
Saturday, January 8, 2011 at 9:32pm by Anonymous

statistics
This will be a two-tailed test. The alternate hypothesis (H1) will not show a specific direction ( ≠ 500). If the alternate hypothesis shows a specific direction (like > or < ), then the test is one-tailed.
Wednesday, March 13, 2013 at 6:35pm by MathGuru

Science
.. its a hypothesis. how can someone help you when its your opinion? no offence but, if you're asking how to write a hypothesis, just google "how to write a hypothesis". the only thing these people will give you is a link to some site you can find by googling.
Monday, February 25, 2008 at 10:48pm by jason

math-Statistics
Ho: ≤ 10 -->null hypothesis Ha: > 10 -->alternative hypothesis Using the z-test formula to find the test statistic: z = (sample mean - population mean)/(standard deviation divided by the square root of the sample size) z = (14.44 - 10)/(4.45/sqrt of 35) I'll...
Sunday, June 8, 2008 at 7:33pm by MathGuru

Statistics
What does it mean when a researcher chooses the cutoff in a comparison distribution to be .01? a. It means that to reject the null hypothesis, the result must be higher than a z score of .01 b. It means that to reject the null hypothesis there must be less than a 1% chance ...
Thursday, June 10, 2010 at 8:44pm by Angela

Science
1) A hypothesis is a educated guess on a experiment. 2) To be certain of your hypothesis you can reesearch on links that deal with the topic or look at a book that deals with the hypothesis. EXAMPLES: Problem: Does a plant grow faster with milk or water? HYPOTHESIS: I believe ...
Tuesday, September 16, 2008 at 5:34pm by Mark =)

statistics
Cholesterol levels of adult males are approximately normally distributed with a mean of mg/dL and a listed standard deviation of . Some researchers claim that the standard deviation of cholesterol levels of adult males is less than . Suppose that we want to carry out a ...
Saturday, February 27, 2010 at 8:05pm by anaya

statistics
What hypothesis did you use? Ho: ?
Sunday, August 8, 2010 at 7:47pm by PsyDAG

statistics (?)
What null hypothesis do you want to consider?
Wednesday, March 5, 2014 at 11:49am by PsyDAG

statistics
Perform a two-tailed hypothesis test on the intrinsic variable AND a two-tailed hypothesis test on the extrinsic variable's data using a .05 significance level. Begin by creating a null and an alternate statement. Use Microsoft Excel to process your data. Copy and paste the ...
Thursday, May 13, 2010 at 11:33am by Donaldson

Statistics
Let's set up the null and alternative hypothesis, find a formula to use, then go from there. Null hypothesis: Ho: p = .42 -->meaning: population proportion is equal to .42 Alternative hypothesis: Ha: p > .42 -->meaning: population proportion is greater than .42 [ Note...
Monday, October 29, 2007 at 3:54pm by MathGuru

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