Math Solutions

[Step-by-Step] Suit Sales. The number of suits sold per day at a retail store is shown in the table, with the corresponding probabilities. Find the mean, variance,

Question: Suit Sales. 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.

Number of suits

Sold X 19 20 21 22 23

Probability P (X) 0.2 0.2 0.3 0.2 0.1

If the manager of the retail store wants to be sure that he has enough suits for the next 5 days, how many should the manager purchase?

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