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The distribution of actual weights of 8-oz chocolate bars produced by a certain machine is normal...

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Statistics

The distribution of actual weights of 8-oz chocolate barsproduced by a certain machine is normal with mean 7.7 ounces andstandard deviation 0.15 ounces.

(a) What is the probability that the average weight of a bar ina Simple Random Sample (SRS) with four of these chocolate bars isbetween 7.59 and 7.86 ounces?

(b) For a SRS of four of these chocolate bars,

c) what is the level L such that there is a 3% chance that theaverage weight is less than L?

Answer & Explanation Solved by verified expert
3.8 Ratings (660 Votes)
Given 77 015aUsing central limit theoremP x P Z x sqrtn SoP759 786 P    See Answer
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