The table below shows the responses from a sample of 680 people in the General Social Survey to the question, “Do you sometimes drink more than you think you should?” The data is separated by sex.   No Yes Total Female 260 92 352 Male 177 151 328 Total 437 243 680 What is the correct calculation of the relative risk for females who said “yes” when compared to males?

A study finds that cars made by one car manufacturer tend to receive a lower safety score than cars made by another car manufacturer in crash tests where a small crash test adult dummy is used in each test.  With this study, a possible confounding variable is:

A new vaccine was recently tested to see if it could prevent the painful and recurrent ear infections that many infants suffer from. The Lancet, a medical journal, reported a study in which babies about a year old were randomly divided into two groups. One group received vaccinations; the other did not. During the following year, only 333 of 2455 vaccinated children had ear infections, compared to 499 of 2452 the unvaccinated children in the control group. The goal is to determine if the vaccine is effective What analysis should be used to answer this question?

The figure below displays four different normal distributions.   Match the lines above to the correct parameters found with each normal distribution Orange (dashes and dots): N(

How has net worth changed over time for different generations? This graph explores this topic from 1989 to 2016 when considering four generations.  

Consider testing the hypotheses below: H0: p = 0.48  Ha: p > 0.48 If the standardized test statistic is  Z = 0.75, which is the only possible “correct” p-value and picture from the standard normal distribution?

Researchers are interested in finding out if there is any association between the number of hours a student works in a week and the number of classes they miss in a week.  Assume data was collected and they found a correlation of 0.326. Using this information, they calculated a p-value of 0.194. Determine whether each of the statements below is true or false.

Assume a researcher performs a hypothesis test and uses the below screenshot from StatKey to calculate the p-value: Look at all of the provided information on the graph when answering this question.   The alternative hypothesis of Ha: is the only possibility because the p-value was obtained from the theoretical distribution and the test is .

The hypotheses for a test for a population proportion are H0: p = 0.70 versus Ha: p ≠ 0.70. A sample of 100 is used with the hypothesis test If the test statistic equals 2.82, which correctly represents how the p-value would be calculated? of 2.82 on a .

Researchers test the provided hypotheses about two variables: ‘Favorite type of Apple’ (Red Delicious, Granny Smith, Honeycrisp, Empire, Gala) and ‘Time Aone where you Live: ‘(Pacific, Mountain, Central, Eastern) when based on a sample of n = 2000 U.S. adults. H0: There is no association between favorite type of apple and time zone where you live Ha: There is an association between favorite type of apple and time zone where you live Assume the researchers calculated a p-value of 0.0246.  What is the correct conclusion for this hypothesis test using a significance level of 0.05?