Conduct a hypothesis test based on the following information using a significance level of 1%: Research Question: Are people running more than 20.95 miles per week? Population standard deviation was NOT KNOWN Test statistic = 2.57 Sample size = 25

Using the information below calculate the predicted value for Y for the given value of X. Y (Dependent Variable) = Cost of a car in thousands of dollars (i.e. Y = 1 means one-thousand dollars) X (Independent Variable) = Miles per Gallon in city traffic   yhat = 28.1 + 0.62*X   On average how many thousands of dollars would a car cost if it gets 15 Miles per Gallon in city traffic (round your answer to 4 decimal places)?

Conduct a hypothesis test based on the following information using a significance level of 1%: Research Question: does the proportion of students taking out student loan debt equal 50%?   Test statistic = 2.83 sample size = 50

Select the appropriate interpretation for the slope of the linear regression equation below. Y (Dependent Variable) = Cost of an annual pass to Disney in dollars X (Independent Variable) = Average number of people who visit each day in thousands of people   yhat = 2122.86 – 30*X

Conduct a hypothesis test based on the following information using a significance level of 10%: Research Question: Do carpenters earn different salaries than accountants? Assume population variances for the two groups are equal to each other Group 1 = Carpenters Group 2 = Accountants Test statistic = 2.65 Group 1 Sample size = 15 Group 2 Sample size = 19

Conduct a hypothesis test based on the following information using a significance level of 5%: Research Question: Is the proportion of democrats who trust science different from the proportion of republics who trust science?   Group 1 = Democrats Group 2 = Republicans Test statistic = 0.88 Group 1 Sample size = 36 Group 2 Sample size = 44

Suppose you wish to compare the mean GPA of students in the College of Public Health to the mean GPA of students in the college of Medicine at USF.  If you have a list of all the students that fit into your population of interest and break them up into 50 sampling intervals to take every 3 person from each sampling interval, what type of sampling are you doing?

Calculate the appropriate test statistic based on the information provided (round your answer to 4 decimal places): Research Question: Do people who work in offices exercise more days per month than people who are day laborers? DO NOT ASSUME THE POPULATION STANDARD DEVIATIONS OF THE TWO SAMPLES ARE EQUAL Group 1: Work in Office Sample mean = 18.5 Sample standard deviation = 6 Sample size = 16   Group 2: Day Laborers Sample mean = 16.2 Sample standard deviation = 5 Sample size = 14

Select the appropriate null and alternative hypothesis for the following research question: Do people enjoy playing video games more than playing sports? phat1 = proportion of people who enjoy playing video games more than sports phat2 proportion of people who enjoy playing sports more than video games

Conduct a hypothesis test based on the following information using a significance level of 5%: Research Question: do more than 30% of students going to college have student loan debt?   Test statistic = 2.16 sample size = 50