(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 30 reams at the start of the day, how many should the manager expect to find at the end of the day?

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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Even with email, offices use a lot of paper. The manager of an office 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
1
2
3
4
of paper used
P(X= x)
0.05
0.15
0.25
0.40
0.05
0.10
Transcribed Image Text:Even with email, offices use a lot of paper. The manager of an office 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 1 2 3 4 of paper used P(X= x) 0.05 0.15 0.25 0.40 0.05 0.10
(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 30 reams at the start of the day, how many should the manager expect to find at the
end of the day?
(d) Find the standard deviation of the number of reams found at the end of the day.
(e) Find the mean and standard deviation of the number of pages of paper used each day (assuming that
each ream is completely used).
Transcribed Image Text:(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 30 reams at the start of the day, how many should the manager expect to find at the end of the day? (d) Find the standard deviation of the number of reams found at the end of the day. (e) Find the mean and standard deviation of the number of pages of paper used each day (assuming that each ream is completely used).
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