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A random sample of 10 miniature Tootsie Rolls was taken from a bag. Each piece was weighed on a very accurate scale. The results in grams were

3.18, 3.21, 3.35, 3.42, 3.23, 3.46, 3.47, 3.29, 3.37, 3.41

(a) Construct a 99 percent confidence interval for the true mean weight.

(b) What sample size would be necessary to estimate the true weight with an error of ± 0.03 grams with 95 percent confidence?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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