Friday

March 27, 2015

March 27, 2015

Number of results: 6,584

**biochemistry**

for each of these qualitative test,barfoed test,benedict test,seliwanoff test,bial test,molisch test,and iodine test, describe the class and give aspecific example of a carbohydrate that would yield a posiyive result?
*April 8, 2011 by kabelo*

**tax income**

To be a qualifying child, the taxpayer must meet three general tests and five specific tests. What are the three general tests? A. Relationship test, residency test and gross income test B. Support test, age test and relationship test C. Dependent taxpayer test, relationship ...
*March 2, 2012 by Billy*

**Statistics**

Which one of the following test is used to compare five means, simultaneously? Run test Normally test One way ANOVA 2 Sample T Test F-Test
*September 15, 2010 by Beata Chmielewska*

**tax income**

To be a qualifying child, the taxpayer must meet three general tests and five specific tests. What are the three general tests? A. Relationship test, residency test and gross income test B. Support test, age test and relationship test C. Dependent taxpayer test, relationship ...
*March 2, 2012 by Billy*

**Math**

If Sally makes all scores of 100 on ten of her homework assignments and 80 on her first test and 85 on her second test and 86 on her third test and 95 on her project. What would Sally's grade be if homework is 10%, test 1=20% test 2=20%, test 3=25%, and project=25% ?
*April 23, 2008 by Jadia*

**Statistics**

When population data are discrete and you want to compare two populations, which test is most appropriate? a. T-test b. Anderson Darling c. Leven’s d. 2-Proprotion test e. F-test
*September 15, 2010 by Beata Chmielewska*

**Science 7R **

Tomorrow I have a science test on circulatory system and is there a practice test THAT IS ON 7TH GRADE SCIENCE REGENTS LEVEL!?!? please i really want to do well on the test if take a pre-test thanks ;) btw --- i'm going over my notes for the test just that i want to take a pre...
*May 15, 2012 by Laruen *

**Help with Psychology Homework**

Your professor asks you to take a personality test. After taking the test, you read your description of your personality type, and are disappointed that the results do not seem to capture your personality at all. In fact, you think the test probably measures attitudes rather ...
*March 24, 2015 by Chris*

**Statistics**

Which test determines if there is a difference between the mean of a group and proposed standard value? Paired t-test F-test One Sample t-test One way ANOVA Two sample t-test
*September 15, 2010 by Beata Chmielewska*

**Psych**

If an iq test has high predictive validity, then a. a psychologist can accurately guess what score someone will get before he or she has started the test. b. students who get good score on the test will get even better scores if they take the test again c. The mean and ...
*March 21, 2012 by Ashley*

**Math**

There are four tests in a year. The first test is worth 26%, the second is worth 20%, the third test is worth 30%, and the fourth test is 20%. Maria received a 59% on her first test. To recieve a final mark of 65%, what is the minimum she needs to obtain on each test? Can ...
*November 18, 2010 by Diana*

**statistics**

A credit card company estimates that the average credit card balance of Americans is $3,210. A statistics student wants to know whether this is true for citizens of her home town. Which hypothesis test would be most appropriate for addressing this question? One sample z-test ...
*March 14, 2015 by madi*

**Math - Averages**

The test average for Louis' calculus class is found by taking the arithmetic mean of his four best test scores. If his first four test scores are 65,82,76 and 87, what score must he get on the fifth test to raise his test average to an 85?
*September 13, 2013 by Venus*

**statistics z or t test **

the average weekly earnings of a production worker were $424. to know if wages, on average, have gone up since that time. To test this, you sample 64 production workers, and determine that their average salary is $432.69, with a sample standard deviation of $33.90. Use a 0.05 ...
*July 19, 2010 by Anonymous*

**Statistics**

The ____________ is a hypothesis-testing procedure in which there are two separate groups at people tested and the population variance is not known. - t test for dependent means - t test for a single sample - t test for independent means - t test for repeated measures
*October 11, 2009 by Trey*

**math**

the probabilities that 3 friends A,B andC pass a driving test are1/3,1/4,2/5 respectively.All 3 take the test find the probability that(a)aa 3 failed the test (b) only B passes the test(c) only 2 of them pass the test (d)at least 1 passes the test... I will do one. Assuming ...
*June 26, 2007 by celina*

**Statistics/Math**

I want to test H0: p = .12 vs. Ha: p ≠ .12 using a test of hypothesis. This test would be called a(n) ____________ test. A) two-tailed B) right-tailed (this one?) C) left-tailed
*October 29, 2013 by Michael*

**Statistics!!!**

b. The correlation between the number correct on a math test and the time it takes to complete the test is -.45. Test whether this correlation is significant for 80 children at the .05 level of significance. Choose either a one-or two-tailed test and justify your choice.
*July 8, 2013 by Ethel*

**Intro to Psychology**

Although not considered high in reliability or validity, this type of psychological assessment, if used correctly and by well-trained professionals, can provide valuable insight into understanding a person's thoughts and feelins. a. intelligence test b. achievement test c. ...
*May 24, 2011 by Laura*

**Biology**

Suffering from acute glomerulonephrtis? if a person has acute glomerulonephrtis what would be the test result (negative or positive)for. a) urine color b) biuret test c)test for iron d)test for urea
*December 13, 2009 by jake*

**Math**

Jeremy got scores of 93,82,91, and 88 on his first four math test. What score must he get on the fifth test to have an average test grade of 90 for the five test ? Can someone explain step by step. Please
*April 11, 2013 by Jazmin*

**College testing**

Im gettin ready to take a placement test for Devry Unviersity. it says Reading , Writing, Arithmetic and Algebra makes up the test. is there any way i can pepare for this test? how long does placement test usually take to complete?
*May 20, 2008 by Bryan*

**t test**

What is the power of each of the following studies,(t test chart) using a t test for dependent means (based on the .05 significance level)?
*December 20, 2010 by wallic*

**Algebra**

Scientists want to set up and test animals in the area for West Nile. The costs to test are $2,200 for setup plus $1.50 to administer each test. Write an expression that gives the total cost to test x animals. Hint: An expression is a combination of known and unknown values.
*December 13, 2011 by Joisey girl*

**medical terminology/exercise science terminology**

which one of the following fitness tests is best for sedentary individuals a.one mile walk test b.strep test c.one -RM test d.cycle ergometer test my answer is d
*January 13, 2014 by susue*

**statistics**

Use Excel to find the p-value for each test statistic.a. Right-tailed test, t = +1.677, n = 13 b. Left-tailed test, t = −2.107, n = 5 c. Two-tailed test,t = −1.865, n = 34
*September 13, 2010 by kim*

**Biochemistry**

1.How to test a sample with cholesterol? - Name of test? - Procedure of test? - Results
*April 20, 2011 by Haldriech*

**statistics**

Would this be 2 tailed test or a 1 tailed test? " Do dog owners have fewer doctor visits than control subjects?" I thought it was a 2 tailed test. Help? * For an independent group t test, when you are instructed to use a 1 tailed test. which means it would be a directional ...
*March 28, 2008 by Tina*

**math,correction**

can someone correct this for me please. Statistics. Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75,63, and 68. Write an inequality representing the score that Sam must get on the last test to get a C ...
*January 9, 2007 by jasmine20*

**math correction**

can someone correct this for me.or teach me if i'm wrong Statistics. Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75,63, and 68. Write an inequality representing the score that Sam must get on the last ...
*January 8, 2007 by Jasmine20*

**statistics**

It has been suggested that the rate of forgetting (coded as normal vs. fast) for word lists often used in psychological experiments may depend on the type of memory test employed, either free-recall or recognition. What is the best way to test this hypothesis? a. regression b...
*May 3, 2014 by June*

**statistics**

It has been suggested that the rate of forgetting (coded as normal vs. fast) for word lists often used in psychological experiments may depend on the type of memory test employed, either free-recall or recognition. What is the best way to test this hypothesis? a. regression b...
*May 3, 2014 by Lisa*

**Math**

Suppose scores on an IQ test are normally distributed. If the test has a mean of 100 and a standard deviation of 10, what is the probability that a person who takes the test will score between 90 and 110?
*September 30, 2009 by Mike*

**Math **

Suppose scores on an IQ test are normally distributed. If the test has a mean of 100 and a standard deviation of 10, what is the probability that a person who takes the test will score between 90 and 110?
*October 1, 2009 by JJ*

**maths**

Suppose scores on an IQ test are normally distributed.If the test has mean of 100 and standard deviation of 10,what is the probability that a person who takes the test will score between 90 and 110?
*March 12, 2012 by boby*

**P Value Math Statistics**

Find the P-value for the indicated hypothesis test with the given standardized test statistics, z. Decide whether to reject H0 for the given level of significance a. two-tailed test with test statistic z= -1.57 and a=0.04
*February 24, 2013 by Katie*

**Math**

Linda got a math test handed back to her and got a 96% on it. However she lost the test, not knowing what she got. If she knows that she scored a 43 on the test then how many 1- mark questions are there on the test?
*July 15, 2009 by Elizabeth*

**Derrick**

John kept track of all his math and reading test scores throughout the year as shown in the table below. Test 1:90math 80reading Test 2:75math 90reading Test 3:80math 70reading Test 4:90math 75reading Test 5:95math 90reading What is the difference between the median of his ...
*March 19, 2012 by running.from.myself*

**Algebra**

Scientists want to set up and test animals in the area for West Nile. The costs to test are $2,200 for setup plus $1.50 to administer each test. (2200 + 1.5x)/x What is the average cost to test 25 animals?250 animals??1000 animals??? (2200 + 1.5x)=2201.50 *25 =2239.00 Is this ...
*December 14, 2011 by becca *

**statistics**

The latest in the "You may be a redneck if . . . " genre has produced a simple questionnaire. If more than 80% of the questions are answered in accordance with redneck"philosophy" (e.g., "You may be a redneck if grade 4 was the best 5 years of your life") the test declares the...
*December 8, 2012 by simone*

**Calculus**

If you have a geometric alternating series, and you prove that the series is converging by doing geometric series test, and NOT alternating series test, then does that allow you to say that the series converges ABSOLUTELY? Or should you do alternate series test also to say ...
*March 4, 2007 by Jin*

**statistics**

The College Board reported the following mean scores for the three parts of the Scholastic Aptitude Test (SAT) (The World Almanac, 2009): Assume that the population standard deviation on each part of the test is = 100. a. What is the probability a sample of 90 test takers will...
*April 14, 2014 by Vanessa*

**statistics**

The College Board reported the following mean scores for the three parts of the Scholastic Aptitude Test (SAT) (The World Almanac, 2009): Assume that the population standard deviation on each part of the test is = 100. a. What is the probability a sample of 90 test takers will...
*April 15, 2014 by Vanessa*

**Statistics**

The College Board reported the following mean scores for the three parts of the Scholastic Aptitude Test (SAT) (The World Almanac, 2009): Assume that the population standard deviation on each part of the test is = 100. a. What is the probability a sample of 90 test takers will...
*April 16, 2014 by Vanessa*

**Math**

The College Board reported the following mean scores for the three parts of the Scholastic Aptitude Test (SAT) (The World Almanac, 2009): Assume that the population standard deviation on each part of the test is = 100. a. What is the probability a sample of 90 test takers will...
*April 16, 2014 by Vanessa*

**Microbiology**

Which of the following tests are used to differentiate between these bacteria: Tests: Bacitracin Test, SXT Test, CAMP Test, Enterococcosel Agar, 6.5% NaCl Test and Optochin Test A) Streptococcus viridans and Streptococcus faecalis B) Group A and Group B Streptococci C) Group B...
*March 25, 2010 by Jade*

**psychology**

how a t Test for a dependent variable can be of great value in applying a new approach to the treatment of aggressive behavior to a small group of students. Why would this t Test be preferred to using another test statistic?
*March 16, 2011 by Anonymous*

**Math**

Problem Solving Work Backward The test that Keyshawn's class took finished at 10:30 a.m. The first part of the test took 30 minutes. There was a 15 minute break. The second part of the test also took 30 minutes. At what time did the test start?
*May 2, 2013 by Ann*

**statistics**

Find the p-value for each test statistic. a. Right-tailed test, z=+1.34 b. Left-tailed test, z=−2.07 c. Two-tailed test, z=−1.69
*September 13, 2010 by kim*

**Help ASAP Statistic**

. A new medical test provides a false positive result for Hepatitis 2% of the time. That is, a perfectly healthy subject being tested for Hepatitis will test as being infected 2% of the time. In research, the test is given to 30 healthy (not having Hepatitis) subjects. Let X ...
*April 2, 2014 by helen*

**math**

The test Keyshawn's class took finished at 10:30 A.M. The first part of the test took 30 minutes. There was a 15 minute break. The second part of the test also took 30 minutes. At what time did the test start?
*May 19, 2014 by Lindsey*

**Stats**

Consider the following Hypotheses test: Ho:m>=80 Ha:m<80 A sample of 121 provided a sample mean of 77.3. The population Standard Deviation is known to be 16.5. A. compute the value of test statistic B. Determin the p value: and at 93.7% confidence, Test the above ...
*April 29, 2012 by bobbie*

**science**

A test liquid has a density of 1.1 g/ml. When you pour some of it into a cup of water,what will happen (assuming that their natures are such that they dont mix and that there is no chemical reaction between the two substances)? A.the test liquid will float on top of the water ...
*June 7, 2010 by lisha*

**math/stats**

Which of the following statements are true? (A) In a two-tail test of hypothesis for a population mean the decision rule is to reject H0 if the test statistic lies outside of the action limits. (B) A statistical test of hypothesis is performed under the assumption that the ...
*March 27, 2015 by Anonymous*

**Statistics Help !! **

Are my answers here correct ? Research questions for z test, t test for independent samples and t test for dependent samples : z test: "An investigator is interested in finding out whether the particular sample of college students is similar to or different from college ...
*July 14, 2013 by Rey*

**Statistics**

Are my answers here correct ? Research questions for z test, t test for independent samples and t test for dependent samples : z test: "An investigator is interested in finding out whether the particular sample of college students is similar to or different from college ...
*July 16, 2013 by Ira*

**Statistics Help !!!!**

Are my answers here correct ? Research questions for z test, t test for independent samples and t test for dependent samples : z test: "An investigator is interested in finding out whether the particular sample of college students is similar to or different from college ...
*July 19, 2013 by Tise *

**Chemistry**

A Test Liquid Has A Density Of 1.1g/ml. When You Pour Some Of It Into A Cup Of Water, What Will Happen (assuming that their natures are such that they don't mix & that there is no chemical reaction between the two substances)? Choose a.b.c. or d. A The test liquid will float ...
*July 8, 2008 by Mickeyv*

**Ged Test**

All advice is welcome. I will take my Ged Test on July 16th. any strategies? I really want to pass this test, Pls advise me on what you know...
*July 13, 2008 by keysha*

**statistics**

a math test has a mean of 43 and a standard deviation of 17.0. find the corrresponding z scores for a test score of 13 and a test score of 59. show work
*October 11, 2010 by Anonymous*

**statistics**

a math test has a mean of 43 and a standard deviation of 17.0. find the corresponding z scores for a test score of 13 and a test score of 59. show all work.
*October 11, 2010 by mary*

**to ms.sue**

is there a website where i can take a review test of the test i have heard of a land because i forgot to take my practice book home and tomorrow is the test.
*May 3, 2012 by Celest*

**Test and Measurements**

You are interested in seeing if a new test will help to determine who will be successful in a training program. The current rate of success is 70% for 200 students. When the new test is implemented, the rate increases to 85% for the 50 students who pass the test and are ...
*June 12, 2014 by Valerie*

**college, statistics**

a math test has a mean of 43 and a standard deviation 0f 17.0. find the corresponding z scores for. show all work. I. a test score of 13 II. a test score of 59
*October 11, 2010 by mary*

**statistic/Psychology**

According to classical test theory, if the observed variance of a test is 50 and the true variance is 40, what is the estimated reliability of the test? a. 0.40 b. 0.50 c. 0.80 d. 0.90
*July 26, 2013 by Crystal*

**statistic/Psychology**

According to classical test theory if the observed variance of a test is 50 and the true variance is 40 what is the estimated reliability of the test? a. 0.40 b. 0.50 c.0.80 d. 0.90
*July 27, 2013 by Crystal*

**statictics**

According to classical test theory, if the observed variance of a test is 50 and the true variance is 40, what is the estimated reliability of the test? Answer a. 0.40 b. 0.50 c. 0.80 d. 0.90
*October 27, 2013 by Joyce*

**statistics**

the average weekly earnings of a production worker were $424. to know if wages, on average, have gone up since that time. To test this, you sample 64 production workers, and determine that their average salary is $432.69, with a sample standard deviation of $33.90. Use a 0.05 ...
*July 18, 2010 by Anonymous*

**statistics**

the admissions policy at a certain university requires that incoming students score in the upper 20% on a standardized test. if the mean score on the test is 510 and the standard deviation of the scores is 80, what is the minimum score that a student can earn on the test to ...
*December 15, 2011 by Anonymous*

**statistics**

the admissions policy at a certain university requires that incoming students score in the upper 20% on a standardized test. if the mean score on the test is 510 and the standard deviation of the scores is 80, what is the minimum score that a student can earn on the test to ...
*December 15, 2011 by Anonymous*

**Psy**

Suggest one psychological research question that could be answered by each of the following types of statistical tests: •z test •t test for independent samples, and •t test for dependent samples
*September 13, 2013 by Vanessa*

**math**

If Susan takes two tests and makes a makes a 54/100 on the first test and a 63/100 on the second test, and is given a third test and makes an 80/100(which can only count as 20% of her total grade for all three test, what is her final grade/score.
*December 18, 2014 by destiny scott*

**Stats**

A Math test has a mean of 51 and standard deviation of 5.0. Find the corresponding z scores for: I. a test score of 64 II. a test score of 47
*October 15, 2011 by Jennifer*

**Probablity**

Samir had prepared the problem tests for Stages 1 to 5 of Geometry and Combinatorics for next week but forgot to label which test was for which stage. Since Samir didn't label them, the computer assigned them labels 1 through 5 randomly, with each label appearing only once. ...
*May 14, 2013 by Mathslover*

**phi 103**

mrs orlof teaches 2 history classes one in the afternoon and one in the morining yesturday she gave the same test to both classses anyone who failed the test must retake since a greater percentage of students who took the morining test failed the test than student in the ...
*February 1, 2011 by shane*

**math**

Could someone please tell me if I am on track with my answer? Jack is taking a four-item true-false test. He has no knowledge about the subject of the test and decides to flip a coin to answer the items. What is the probability that he receives a perfect score? What is the ...
*November 18, 2009 by Punkie*

**Prealgebra**

A teacher was comparing results on two sets of test scores for a group of eleven students. The mean score on the second test was seven points higher than that of the first test. The median grade on both the tests was the same. Determine two sets of test scores that would ...
*May 7, 2012 by Usha*

**Biochemistry 1**

1. You are given two clear solutions and told that one is lauric acid solution and the other is oleic acid. State and clearly outline the test you would use to differentiate one from the other. Hint: Name of test, Procedure of test, and Results. 2. Write the chemical equations...
*April 20, 2011 by Mangetty*

**statistic**

how a t Test for a dependent variable can be of great value in applying a new approach to the treatment of aggressive behavior to a small group of students. Why would this t Test be preferred to using another test statistic?
*December 15, 2010 by smith*

**statistics**

(Blood Test Problem) Suppose 100 people are waiting for blood test for a kind of disease. The probability that for one person the test result is positive equals 0.1. Two test methods are as follows: Method 1: Test one by one. Then we have to do 100 tests. Method 2: Divide 100...
*October 4, 2011 by Anonymous*

**Business**

If a pre-employment test (such as personality tests/aptitude test etc)is reliable can it can still be discriminatory? I know that tests should be reliable and valid as well as a test should not be discriminatory...but I feel that the answer is true because even though a test ...
*October 24, 2007 by Jen*

**Math**

An aptitude test has a mean of 300 and a standard deviation of 40. The test scores are normally distributed. If 1000 people take the test, find the number of people who will score between 280 and 360.
*July 12, 2014 by Shelagh*

**algebra 1**

You are taking a Spanish course in which there will be four test. Each worth 100 point. You have scores of 99,97 and 92 on the first three test. You must make a total of 360 in order to get an a. What scores on the last test will give you an a? I am really grateful for your help.
*December 17, 2010 by esther*

**statistics**

10. Explain how the power of a hypothesis test is influenced by each of the following. Assume that all other factors are held constant. a. Increasing the alpha level from .01 to .05. b. Changing from a one-tailed test to a two-tailed test.
*March 18, 2011 by Melissa Williams*

**statistics**

20. Explain how the power of a hypothesis test is influenced by each of the following. Assume that all other factors are held constant. a. Increasing the alpha level from .01 to .05. b. Changing from a one-tailed test to a two-tailed test.
*April 14, 2012 by melissa*

**statistics**

5. Each year, a national achievement test is administered to 3rd graders. The test has a mean score of 100 and a standard deviation of 15. If Jane's z-score is 1.20, what was her score on the test?
*September 2, 2011 by xiomara*

**algebra **

i need help: A national achievement test is administered annually to 9th graders. The test has a mean score of 100 and a standard deviation of 15. If John’s z-score is 1.20, what was his score on the test?
*November 19, 2013 by mufasa*

**Epidemiology**

Can anyone answer this question? The prevalence of undetected diabetes in a population to be screen ed is approximately 1.5% and it is assumed that 10,000 persons will be screened. The screening test will measure blood serum glucose content. A value of 180mg% or higher is ...
*July 12, 2012 by Elizabeth*

**science**

Consider this question Is a paired t-test more powerful than a a test between independent samples a. A paired t- test is more powerful because it utilizes information b. an independent sample t0-test is more powerful because independence data is not in a particular direction c...
*December 19, 2011 by Debra *

**English**

An essay-type exam is an example of a(n): A. objective test. B. written test. C. subjective test. D. academic writing. is it B An example of an objective test is: A. short answers. B. essay-type exam. C. fill in the blanks. D. discussion board. is it D
*March 19, 2013 by Amy*

**Math**

Mrs. Marcincavage allowed each student in her math class to drop the lowest of their five test scores. When Matthew dropped the lowest of his test scores, a 60, his test average increased by 5 points. What is Matthew’s new test average?
*March 3, 2014 by Elizabeth*

**math**

Mrs. Marcincavage allowed each student in her math class to drop the lowest of their five test scores. When Matthew dropped the lowest of his test scores, a 60, his test average increased by 5 points. What is Matthew’s new test average?
*March 4, 2014 by Katie*

**sssc**

Suppose we test H0 : p = .3 versus Ha : p ≠ .3 and that a random sample of n = 100 gives a sample proportion p = .20. a: Test H0 versus Ha at the .01 level of significance by using critical values. What do you conclude? b: Find the p-value for this test. c: Use the p-...
*June 11, 2012 by Anonymous*

**statistics**

. A professor is interested in knowing the correlation, if any, of students’ scores on the first and second exams given in his class. Test 1 Test 2 92 86 90 87 89 85 82 90 88 79 92 90 100 92 91 84 Is there a significant correlation? Explain its statistical significance, if any...
*February 12, 2012 by John*

**Statistic**

A restaurant that bills its house account monthly is concerned that the average monthly bill exceeds $200 per account. A random sample of twelve accounts is selected, resulting in the sample mean of $220 and a sample standard deviation of $12. The researchers have determined ...
*October 20, 2008 by Marilyn*

**Science**

Suppose that you heated a sample of a hydrated ionic compound in a test tube. What might you expect to see inside the test tube, near the top of the test tube? Explain please i really am stumped on this question...
*December 1, 2014 by katie*

**college**

use the five steps for problem solving. the average of two test scores is 79. if one test score is eleven less than the other, what are the two test scores?
*December 8, 2010 by kristie*

**math**

Your teacher is giving you a test worth 100 points containing 40 questions. There are two-point and four-point questions on the test. How many of each type of question are on the test? How would you set this up?
*February 7, 2010 by Annie*

**statistics**

At the beginning of the semester, students who registered for a statistics course were randomly assigned to two sections, each taught by a different instructor. At the end of the semester, we would like to test whether there are differences in performance on the final exam ...
*May 1, 2014 by April*

**Statistics**

The effectiveness of a headache medicine is tested by measuring the intensity of a headache in patients before and after drug treatment. The data consist of before and after intensities for each patient. Identify the design of the study. A) Paired t-test B) Two-sample t-test C...
*November 21, 2013 by Samantha*

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