1.According to a recent poll cholesterol levels in healthy adults are normally distributed with a mean of 209 mg/dL and a standard deviation of 35 mg/dL. A random sample of 31 healthy adults is selected. Find the probability that the total cholesterol level in the sample of 31 adults will be less than 215.

2.A survey typically records many variables of interest to the researchers involved. Below are some of the variables from a survey conducted by the U.S. Postal Service. Which of the variables isquantitative continuous?

• The average temperature during delivery time
• County of residence
• The number of houses on a route
• The number of stamps on a package

3.There are 9 different types of dressing at a store.How many different orders can the stocker place 5 on the shelf?

4.An instructor wants to compare the performance on a test between her 1st period students and her 2nd period students.Below is the box plots for each period.Which of the following statements below iscorrect?

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