Description of this paper

A random sample of 15 miniature Tootsie Rolls was taken from a bag.

Description

solution


Question

A random sample of 15 miniature Tootsie Rolls was taken from a bag. Each piece was weighed on a very accurate scale. The results in grams were as given in the table at right.;(a) Construct a 90 percent confidence interval for the true mean weight. (b) What sample size would be necessary to estimate the true weight with an error of ? 0.02 grams with 90 percent confidence? (c) Discuss the factors which might cause variation in the weight of Tootsie Rolls during manufacture.;X;3.087;3.131;3.241;3.241;3.270;3.353;3.400;3.400;3.408;3.411;3.435;3.437;3.437;3.439;3.477

 

Paper#31626 | Written in 18-Jul-2015

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