Choose a person aged 19 to 25 years at random and ask, “In the past seven days, how many times did you go to an exercise or fitness center or work out?” Call the response Y for short. Based on a large sample survey, here is the probability distribution of Y.

a. A histogram of the probability distribution is shown. Describe its shape.

b. Calculate and interpret the expected value of Y.

Transcribed Image Text:

Days yi 1 2 3 4 5 6 7 Probability pi 0.68 0.05 0.07 0.08 0.05 0.04 0.01 0.02