The weight of a certain machined part has a standard deviation of 4 grams. How many parts from the assembly line would you need to sample to calculate a 95% confidence interval estimate of the average weight of the parts being manufactured with a margin of error of 2.27 grams?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The weight of a certain machined part has a standard deviation of 4 grams. How many parts from the assembly line would you need to sample to calculate a 95% confidence interval estimate of the average weight of the parts being manufactured with a margin of error of 2.27 grams?

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The weight of a certain machined part has a standard deviation of 11 grams. How many parts from the assembly line would you need to sample to calculate a 95% confidence interval estimate of the average weight of the parts being manufactured with a margin of error of 4.23 grams?

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The weight of a certain machined part has a standard deviation of 11 grams. How many parts from the assembly line would you need to sample to calculate a 95% confidence interval estimate of the average weight of the parts being manufactured with a margin of error of 4.23 grams?

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