In a weight loss study, 9 sets of identical twins were given two different GLP-1 medications.For each pair of twins, one twin would be randomly assigned to drug 1 and the other twinwould be assigned to drug 2. Here is the weight loss in pounds for the two samples.Which hypotheses should be used to test if there is a difference in the two drugs?

An art gallery has 10 distinct paintings stored in the back. They have space to display 4 of them on the main wall. In how many ways can they choose the 4 paintings to display (order of selection does not matter)?  

A researcher interviewed 18-to 34-year-olds and asked them whether or not theyparticipated in the Ice Bucket Challenge. 17% of the young people said that theyparticipated in the Ice Bucket Challenge. From this sample, the researcher computed a95% confidence interval, and his result was (0.118, 0.222). Which of the following is thebest interpretation of this confidence interval?

A study found that 8 % of Americans work 6 days per week. In a random sample of 89Americans, find the expected number of Americans who work 6 days per week. Next, findthe standard deviation for the number of Americans who work 6 days per week.

Students in a Natural Sciences college are classified by their major and class in the table below.One student is randomly chosen from this table. Find the probability of selecting a student that is a Junior or is majoring in Math.

In an urban area, the probability that an 18 to 34-year-old was born in the USA is 0.29. Three 18- to 34-year-olds are randomly selected. Find the probability that all 3 were born in the USA.

The average speed on a highway is 65 mph with a standard deviation of 5 mph. Would it be unusual to find a car traveling 82 mph?  

A student is calculating her GPA. She got an A in her 3-credit hour Spanish class, a B in her 3 credit-hour Statistics class, a B in her 3 credit-hour Chemistry class, and a C in her 2 credit- hour Speech class. If an A is worth 4 points, a B is worth 3 points, and a C is worth 2 points,find her weighted GPA which is the grade point average.

Each student in a class is surveyed on how many books they had to purchase for all of their courses in the past year. A box plot of the results is provided below: Use the boxplot to decide which measure of center would best describe the center of the data.  

An adult male elephant’s tusks have an average combined weight of 95 pounds with a standard deviation of 14 pounds. Would it be unusual to find an adult male elephant whose tusks have a combined weight of 120 pounds?