Number of Credit Cards A bank vice president feels that each savings account customer has, on average, three credit cards. The following distribution represents the number of credit cards people own....

Is the vice president is correct or not?

Extracted text: Number of Credit Cards A bank vice president feels that each savings account customer has, on average, three credit cards. The following distribution represents the number of credit cards people own. Find the mean, variance, and standard deviation. Is the vice president correct? Number of cards X 1 3 4 Probability P(X) 0.03 0.44 0.27 0.08 0.18 O a. mean = 1.34, variance = 0.9244, standard deviation = 0.96 (Vice president is correct) b. mean = 1.94, variance = 1.356, standard deviation = 1.165 (Vice president is correct) O C. mean = 1.94, variance = 1.356, standard deviation = 1.165 (Vice president is not correct) O d. mean = 1.34, variance = 0.9244, standard deviation = 0.96 (Vice president is not correct)