Suits Sold
The number of suits sold per day at a retail store is shown in the table, with the corresponding probabilities. Find the mean, variance, and standard deviation of the distribution. If necessary, round all intermediate calculations to two decimal places and round your final answers to one decimal places.
#of Suits Sold (X) 14 15 16 17 18
P(X) 0.2 0.3 0.2 0.2 0.1
If the manager of the retail store wants to be sure that he has enough suits for the next 24 days, how many should the manager purchase? If necessary, round up the nearest suit.