Solved: The distribution of actual weights of 8-oz chocolate bars, Basic Statistics

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The distribution of actual weights of 8-oz chocolate bars

The distribution of actual weights of 8-oz chocolate bars produced by a certain machine is normal with mean 7.7 ounces and standard deviation 0.2 ounces.

a) What is the probability that the average weight of a random sample of 4 of these chocolate bars will be between 7.57 and 7.83 ounces?

b) For a random sample of of these chocolate bars, find the value L such that P(x

0.0281.

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Basic Statistics: The distribution of actual weights of 8-oz chocolate bars

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