Question 941:
Problem 3: A group of college students were surveyed to learn how many times they had visited a dentist in the previous year. The probability distribution for Y, the number of visits, is given by the following tableY (No. visits) Probability
0 0.15
1 0.50
2 0.35
Total 1.000
1. what is the mean of Y?
2. what is the variance and standard deviation of Y?