What is the standard deviation of the number of reams

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Problem - Even with email, of?ces use a lot of paper. The manager of an of?ce has estimated how many reams (packs of 500 sheets) are used each day and has assigned these probabilities. Use the table to complete parts a through e below.

X = # of reams of paper used

0

1

2

3

4

5

P (X = x)

0.05

0.30

0.25

0.15

0.15

0.10

Required -

(a) How many reams should the manager expect to use each day?

(b) What is the standard deviation of the number of reams?

(c) If the storeroom has 20 reams at the start of the day, how many should the manager expect to find at the end of the day?

Reference no: EM132734699

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