THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
You have recently joined a country club.The number of times you expect to play golf in a month is represented by a random variable with a mean of 10 and a standard deviation of 2.2.Assume you pay monthly membership fees of $500 per month and pay an additional $50 per round of golf.
-What is the standard deviation for your average monthly bill from the country club?
A)$220
B)$110
C)$324
D)$180

Question

Quizplus · Accepted Answer

The standard deviation of the monthly bill is calculated by multiplying the standard deviation of the number of rounds by the cost per round. Thus, $50 * 2.2 = $110.