question archive Harrington Health foods stocks 5 loaves of Neutro-bread
Harrington Health foods stocks 5 loaves of Neutro-bread
Subject:StatisticsPrice:2.87 Bought7
Harrington Health foods stocks 5 loaves of Neutro-bread. The probability distribution for the sales of Neutro-bread is listed in following table. How many loaves will Harrington sell on average?
Number of Loaves Sold Probabiltiy
0 0.05
1 0.15
2 0.20
3 0.25
4 0.20
5 0.15
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Answer:
xP(x)x?P(x)
0 0.05 0
1 0.15 0.15
2 0.2 0.4
3 0.25 0.75
4 0.2 0.8
5 0.15 0.75
sum 1.00 2.85.
E(X)=?x?P(x)=2.85.
So Harrington sell on average 2.85?3 loaves.
