A grocery store has specially packaged oranges and has claimed a bag of oranges will yield 2.5 quarts of juice. After randomly selecting 42 bags, a stacker found the average juice pro- duction per bag to be 2.2 quarts. Historically, we know the population standard deviation is 0.2 quart. Using this sample and a decision criterion of 2.5 standard errors, could we conclude the store's claims are correct?

MATLAB: An Introduction with Applications
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A grocery store has specially packaged oranges and has claimed a bag of oranges will yield
2.5 quarts of juice. After randomly selecting 42 bags, a stacker found the average juice pro-
duction per bag to be 2.2 quarts. Historically, we know the population standard deviation is
0.2 quart. Using this sample and a decision criterion of 2.5 standard errors, could we conclude
the store's claims are correct?
Transcribed Image Text:A grocery store has specially packaged oranges and has claimed a bag of oranges will yield 2.5 quarts of juice. After randomly selecting 42 bags, a stacker found the average juice pro- duction per bag to be 2.2 quarts. Historically, we know the population standard deviation is 0.2 quart. Using this sample and a decision criterion of 2.5 standard errors, could we conclude the store's claims are correct?
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