slomomo
Popular questions and responses by slomomo
Statistics/Probability
A certain brand of candies have a mean weigh of 0.8576 g and a standard deviation of 0.0523. A sample of these candies came from a package containing 447 candies,and the package label stated the net weight is 381.3 g. (If every package has 447 candies, the
asked on March 5, 2015 
statistics/normal distribution
If np is greater than or equal to 5, and nq is greater than or equal to 5, estimate P(fewer than 8) with n =14 and p = 0.6 by using the normal distribution as an approximation to the binomial distribution; if np < 5 or nq < 5, then state that the normal
asked on February 25, 2015 
algebra
For the quadratic function f(x) =  x^2 +2x + 6, find the vertex and the axis of symmetry, and graph the function. Again, I need help with this as these are practice examples for an upcoming quiz and I stink at this part of algebra and I need to get it
asked on February 4, 2015 
statistics
A survey found that women's heights are normally distributed with mean 62.4 in and standard deviation 2.8 in. The survey also found that men's heights are normally distributed with a mean of 68.9 in. and standard deviation 2.8. Complete parts a through c
asked on March 5, 2015 
statistics/Help Please!!
In a sample of seven cars, each car was tested for nitrogenoxide emissions (in grams per mile) and the following results were obtained:0.18, 0.12, 0.05, 0.19, 0.18,0.13, 0.15. Assuming that this sample is representative of the cars in use, construct a 98%
asked on March 4, 2015 
statistics
Determine whether the description corresponds to an observational study or an experiment. Research is conducted to determine if there is a relation between kidney function in adults and childhoodonset diabetes.
asked on March 10, 2015 
chemistry
What is the difference between biochemical, pharmaceutical, and diagnostic chemical reactions in healthcare? What is a specific example that exists for each of these chemical reaction types above and why might it be of importance to healthcare
asked on May 16, 2014 
statistics
For classes of 273 students, find the mean and standard deviation for the number born on the 4th of July, Ignore leap years. For a class or 273 students, would two be an unusually high number who were born on the 4th of July? I don't know how to find how
asked on February 27, 2015 
statistics
A coin mint has a specification that a particular coin has a mean weight of 2.5 g. A sample of 39 coins was collected. Those coins have a mean weight of 2.49491 g and a standard deviation of 0.01372 g. Use a 0.05 significance level to test the claim that
asked on March 7, 2015 
statistics
Determine the level of the confidence given the confidence coefficient z(α/2) for the following situation: z(α/2) = 1.96
asked on February 27, 2015 
statistics
Assume that a procedure yields a binomial distribution with n trials and the probability of success for one trial is p. Use the given values of n and p to find the mean μ and standard deviation σ. Also, use the range rule of thumb to find the minimum
asked on February 18, 2015 
statistics/normal distribution
Find the area of the shaded region.The graph to the right depicts IQ scores of Adults (85120), and those scores are normally distributed with a mean of 100 and a standard deviation of 15
asked on March 4, 2015 
statistics
A headline in a certain newspaper states that "most stay at first job less than 2 years." That headline is based on an online poll of 320 college graduates. Among those polled, 72% stayed at their first fulltime job less than 2 years. a. Assuming that 50%
asked on February 27, 2015 
statistics
Heights of men on a baseball team have a bellshaped distribution with a mean of 169 cm and a standard deviation of 9 cm. Using the empirical rule, what is the approximate percentage of the men between the following values? a. 151 cm and 187 cm. b. 160 cm
asked on February 26, 2015 
statistics
A candy company claims that 13% of its plain candies are orange, and a sample of 100 such candies is randomly selected. Find the mean and the standard deviation for the number of orange candies in such groups of 100. I do not get the formula to figure this
asked on February 20, 2015 
statistics
A candy company claims that 11% of its plain candies are orange, and a sample of 200 such candies is randomly selected a. find the mean and standard deviation for the number of orange candies in such groups of 100. use the formulas below to calculate the
asked on February 18, 2015 
Statistics/Probability
Assume that women’s heights are normally distributed with a mean given by μ = 63.4 in, and a standard deviation given by σ = 2.3 in. (a) If 1 woman is randomly selected, find the probability that her height is less than 64 in. (b) If 43 women are
asked on March 4, 2015 
statistics
A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 395 babies were born, and 316 of them were girls. Use the sample data to construct a 99% confidence interval estimate of the percentage of girls born.
asked on March 13, 2015 
statistics
An online site presented this question, 'Would the recent norovirus outbreak deter you from taking a cruise?' Among 34,327 people who responded, 66% answered 'yes'. Use the sample data to construct a 95% confidence interval estimate for the proportion of
asked on March 9, 2015 
Statistics
In the week before and the week after a holiday, there were 12,000 total deaths, and 5916 of them occurred in the week before the holiday. a. Construct a 95% confidence interval estimate of the proportion of deaths in the week before the holiday to the
asked on March 9, 2015 
statistics
Suppose IQ scores were obtained from randomly selected twins. For 20 such pairs of people, the linear correlation coefficient is 0.876 and the regression line is yhat = 11,76 + 0.89x, where x represents the IQ score of the twin born second. Also,the 20x
asked on March 7, 2015 
statistics
Heights of women have a bellshaped distribution with a mean of 158 cm and a standard deviation of 8 cm. Using Chebyshev’s theorem, what do we know about the percentage of Women with heights that are within 3 standard deviations of the mean. What are the
asked on February 21, 2015 
statistics
Let the random variable x represent the number of girls in a family with three children. Assume the probability of a child being a girl is 0.46. The table describes the probability of having x number of girls.Determine whether the table describes a
asked on February 18, 2015 
statistics
Five males with a particular genetic disorder have one child each. the random variable x is the number of children among the five who inherit the genetic disorder. Determine whether the table describes a probability distribution. If it does, find the mean
asked on February 18, 2015 
algebra
Find the vertex and the axis of symmetry, and graph the function. f(x) = x^2  5x Graphing is not my strong point, I really need help with this. Thanks
asked on February 4, 2015 
psychology
what makes social psychology unique in terms of social science
asked on April 22, 2013 
psychology
Perceptions are linked to sensations. what happens when we get overloaded from our senses and how would that overload impact perceptions?
asked on April 14, 2013 
psychology
In the article "Conditioned emotional reactions" by John B. Watson and Rosalie Raynor., Explain the initial pairing of the bar and the rat in terms of learning through classical conditioning What are unconditional stimulus (US) conditional stimulus (CS)
asked on April 9, 2013 
psychology
Mensa is a group for those who score within the top 2% on a standardized intelligence test. The group "provides a forum for intellectual exchange among its members.What do you think about a group of people who get together based on their intelligence?
asked on April 7, 2013 
psychology
Is addiction (Drug) a disease or a choice and why? Could it be possible that both apply according to scientific evidence
asked on March 31, 2013 
psychology
I am trying to find a good topic question and hypothesis for addiction. In my class we were asked to pick any topic related to psychology and find research to back it up. Addiction is a wide range of different behaviors and I can't seem to find a concrete
asked on March 30, 2013 
statistics/probability
An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lb and 181 lb. The new population of pilots has normally distributed weights with a mean of 135 and a standard deviation of 25.1 lb. If
asked on March 12, 2015 
statistics
In a test of the effectiveness of garlic for lowering cholesterol, 44 subjects were treated with garic in a processed tablet form. Cholesorol levels were measured before and after the treament. the changes in their levels of LDL cholestorol (in mg/dL have
asked on March 1, 2015 
speech (Writeacher)
I'm trying to think of a good topic for my persuasive speech and with all I have going on my mind is a blank. I wondered if you had any good suggestions? I would greatly appreciate it. Thanks for all your help and you inspired me so with your story that it
asked on May 23, 2013 
psychology
What makes psychology a science????? and What are independent and dependent variables in regards to scientific research in psychology?????
asked on April 16, 2013 
Behavioral Statistics Help!
Suppose we had conducted an ANOVA, with individuals grouped by political affiliation (Republican, Democrat, and Other), and we were interested in how satisfied they were with the current administration. Satisfaction was measured on a scale of 110, so it
asked on December 10, 2015 
Stats Help!
You are interested in knowing whether wealthier people are happier. You collected data from fifty people about their incomes and their overall happiness levels on a scale of 1 to 10. Upon analyzing the results, you find that the correlation coefficient has
asked on December 2, 2015 
Behavioral Stat. Help!
Conducting a post hoc test is similar to conducting multiple ttests. As a result, it would seem natural to want to bypass the ANOVA and just use repeated ttests. Explain why this approach is not necessarily a good idea and why an ANOVA followed by a post
asked on November 25, 2015 
Behavioral Statistics Help!
There are also potential problems associated with interpreting the results of a paired ttest. Imagine you are interested in determining whether an employee of a company performs better with or without a bonus. What are some issues that could affect the
asked on November 20, 2015 
Statistics HELP!!
Identify an example of a population that you would expect to be normally distributed. Explain why, according to you, it would be normally distributed. Then, describe a subset of the population you identified and explain why it would not be normally
asked on October 28, 2015 
Behavioral Statistics Help!
The majority of the data is normally distributed if there are enough subjects. For instance, if you collected test scores of only a few honor students, the data will most likely not be normally distributed because you would have a sample that did not
asked on October 28, 2015 
Behavioral Statistics
Let's say that the standardized test had 100 possible points. If we wanted to identify the top 25%, why not just select those with raw scores above 75? Why do we have to standardize the scores?
asked on October 27, 2015 
Behavioral Statistics
Let's say that the standardized test had 100 possible points. If we wanted to identify the top 25%, why not just select those with raw scores above 75? Why do we have to standardize the scores?
asked on October 25, 2015 
Behavioral Statistics
Explain the general rationale behind using a zscore for describing how an individual performed on an exam compared to just stating the overall mean and the individual's score. How does the information differ in the two situations? What additional
asked on October 22, 2015 
statistics
You are part of a school and have to report the results of standardized test scores. Which measure of central tendency would you use? Assume that you don't know how your students will perform; so consider the general effects of outliers on the three
asked on October 15, 2015 
statistics
Based on a study of IQs of men and women who play chess competitively, a researcher concludes that playing chess causes people to become smarter. Do you agree with this conclusion?
asked on March 10, 2015 
Statistics
What does phat mean
asked on March 8, 2015 
math/statistics
The data show the time intervals after an eruption (to the next eruption) of a certain geyser. Find the regression equation,letting the first variable be the independent (x) variable. Find the best predicated time of the interval after an eruption given
asked on March 6, 2015 
Statistics
Identify the type I error and type II error that corresponds to the given hypothesis. The proportion of settled medical malpractice suits is 0.28 I have been working on this one for 3 hours and am doing something wrong, Please help!!
asked on March 6, 2015 
Statistics Help
Express the confidence interval (0.024, 0.112) in the form of phat – E < p < phat + E = __< p < __ I don't understand how to perform this formula. Please help I am about to graduate and this is my last class, and I am struggling as I only know basic
asked on March 4, 2015 
Statistics/check answer
If a population has a standard deviation σ of 18.2 units, what is the standard error of the mean if samples of size 25 are selected? Show all work. standard error of the mean = 0/sqrt(n) = 18.2/sqrt(25) = 18.2/5 =3.64 Answer 3.64
asked on March 1, 2015 
statistics
Let the random variable x represent the number of girls in a family with three children. Assume the probability of a child being a girl is 0.42. The table on the right describes the probability of having x number of girls. Determine whether the table
asked on February 20, 2015 
statistics
A brand has 50% recognition rate. Assume the owner of the brand wants to verify that rate by beginning with a small sample of 6 randomly selected customers, what is the probability that exactly 5 of the selected consumers recognize the brand name? I need
asked on February 20, 2015 
probabilities
A brand name has 50% recognition rate. Assume the owner of the brand wants to verify that rate by beginning with a small sample of 6 randomly selected consumers. How would you do the binomial probability formula can be used to find the simple binomial
asked on February 19, 2015 
statistics
S) Suppose we want to determine the (binomial) probability (p) of getting 5 heads in 15 flips of a 2sided coin. Using the Binomial table in the appendix of the text, what values of n, x, and p would we use to look up this probability, and what would be
asked on February 17, 2015 
algebra
Find the xintercepts and yintercepts for f(x) f(x)=x^24x + 1 I have been trying to figure this one out for hours and I find no solution but there has to be a way to figure this out and I can't. Please help!! Thank you
asked on February 4, 2015 
algebra
Multiply and simplify. Assume that no radicands were formed by raising negative numbers to even powers. √6x^3 * √18x^2 = √2 * 3 * x^3 * √2 * 3^2 * x^2 = √2 * 3x^2x * √2 * 3^2 * x^2 = 6x^2 * √3x Is this correct?? If not can you show me the
asked on February 3, 2015 
algebra
Use the law of exponents to simplify. 5/6^12 * 2/9 I don't remember if the second fraction you do the reciprocal and I have not done one where the denominator has to the power of. Help!!
asked on February 3, 2015 
algebra
a store mixes red fescue worth $10 per pound and ryegrass worth $14 per pound. The mixture is to sell for $13 per pound. Find out how much of each should be used to make a 228pound mixure
asked on January 13, 2015 
algebra
Translate to a system of equations but do not solve. One canned juice drink is 20% orange juice; another is 10% orange juice. How many liters of each should be mixed together in order to get 10L that is 13% orange juice? How many liters of the 20% orange
asked on January 13, 2015 
Criminal Law
What do you know about the classification of criminal law?
asked on August 7, 2014 
Criminal Law
points of similarities between Federal and State Law.
asked on August 7, 2014 
American Goverment
What are the political issues in regards to Obamacare?
asked on August 5, 2014 
American Government
Do the backgrounds of members matter in the legislative process?
asked on August 2, 2014 
American Government
What are the characteristics of American democracy? How does American democracy differ from the theory of democratic government?
asked on July 18, 2014 
chemistry
What is an example of a genetic disease that is caused by silent mutation?
asked on June 29, 2014 
chemistry
What is the chemical formula of ketohexose?
asked on June 15, 2014 
chemistry
How are cis trans isomers used for night vision?
asked on June 7, 2014 
chemistry
What are the differences between cis and transisomers?
asked on June 7, 2014 
chemistry
What is the significance of atomic nuclear decay? What is your analysis on the societal implications of using this process?
asked on May 31, 2014 
chemistry
aspirin, Sodium bicarbonate, and Salicylic acid. From these examples, select one acid, one base, and one salt and describe specifically how and where they are used in therapeutic processes.
asked on May 24, 2014 
chemistry
Enzymes are a catalyst, which means that they make chemical reactions go faster. “How does a catalyst affect the activation energy of the reaction?
asked on May 18, 2014 
chemistry
Enzymes are a catalyst, which means that they make chemical reactions go faster. “How does a catalyst affect the activation energy of the reaction?
asked on May 18, 2014 
chemistry
what are three examples of a hypothesis? Or at least one....
asked on April 28, 2014 
Introduction to Criminal Courts
Analyze and explain the importance of a college degree for someone seeking to join the police or police training. Analyze and explain how higher education plays a pivotal role in advancement and promotions in the police department. Analyze whether higher
asked on March 27, 2014 
English Comp
What does Rhetorical or Rhetorical stance mean?
asked on February 22, 2014 
speech (Writeacher)
Writeacher, in response I am doing my outline for an informative speech and I decided to choose the topic Why me? Dying to live or living to die. Everybody at some point will encounter some kind of diagnosis whether it be you, your spouse, a loved one and
asked on May 21, 2013 
speech
Please help me. I need to write an informative speech. My husband has been sick for along time and needs a lung transplant (He is 52 and never smoked!) Any way I want to right a speech on how any one can over come a life crisis. It's just hard to think of
asked on May 21, 2013 
writing
What is the difference between a general purpose and a specific purpose? How can writing a clear specific purpose help you put together a more effective speech
asked on May 9, 2013 
College Mathematics
Counting principles and permutations. A social security number consists of 9 digits. How many different social security numbers are possible if repetition of digits is permitted. digits 09
asked on March 18, 2013 
College Mathematics
U.S. Presidents. The ages of the 44 presidents at their first inauguration (as of 2011) are: 57 57 49 52 50 42 54 55 64 61 61 64 56 47 51 51 56 46 57 54 50 46 55 56 60 61 54 57 68 48 54 55 55 62 52 47 58 51 65 49 54 51 43 69 a. Construct a frequency
asked on March 18, 2013 
College Mathematics
Counting Principles and Permutation. A social security number consists of 9 digits. How many different social security numbers are possible if repetition of digits is permitted
asked on March 18, 2013 
College Mathematics
This is a repost. I posted a question 2 days ago and the response was wrong. The question was on Probability. The question was One card is selected from a deck of playing cards. Determine the probability of selecting a jack OR a club. use this rule P(A or
asked on March 12, 2013 
College Mathematics
Probability. Select one card. One card is selected from a deck of playing cards. Determine the Probability of selecting a Jack OR a club. P(AorB)= P(A) + P(B)  P(A and B)
asked on March 12, 2013 
College Mathematics
(odds) Playing Bingo:When playing bingo, 75 balls are placed in a bin and balls are selected at random. Each ball is marked with a letter and a number as indicated in the following chart: B: 115 I: 1630 N:3145 G:4660 O:6175. For example there are
asked on March 11, 2013 
College Mathematics
Probability: "or" and "and" problem. Select one card, one card is selected from a deck of playing cards. Determine the probability of selecting a jack or a club.
asked on March 10, 2013

Behavioral Statistics Help!
I don't understand it that is why I am asking for help. I do not expect you to do it for me but maybe show an example?
posted on October 29, 2015 
Behavioral Statistics
This is just an added to question to your answer. Let's say that the standardized test had 100 possible points. If we wanted to identify the top 25%, why not just select those with raw scores above 75? Why do we have to standardize the scores?
posted on October 25, 2015 
Statistics/Probability
what does SEm mean?
posted on March 5, 2015 
statistics
It says "Construct a 99% confidence interval estimate of the mean net change in LDL cholestorol after the garlic treatment. What does the confidense interval suggest about the effectiveness of garlic in reducing LDL cholestorol? What is the confidence
posted on March 2, 2015 
American Government
members of congress
posted on August 2, 2014 
College Mathematics
Does this look right if it is 09 26*26*10*10*10*10=6,760,000
posted on March 18, 2013 
College Mathematics
it said 9 digits 09
posted on March 18, 2013