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# Six measurements are taken of the thickness of a piece of

## Problem 9E Chapter 5.3

Statistics for Engineers and Scientists | 4th Edition

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Problem 9E

Problem 9E

Six measurements are taken of the thickness of a piece of 18-gauge sheet metal. The measurements (in mm) are: 1.316, 1.308, 1.321, 1.303, 1.311, and 1.310.

a. Make a dotplot of the six values.

b. Should the t curve be used to find a 99% confidence interval for the thickness? If so, find the confidence interval. If not, explain why not.

c. Six independent measurements are taken of the thickness of another piece of sheet metal. The measurements this time are: 1.317, 1.318, 1.301, 1.307, 1.374, 1.323. Make a dotplot of these values.

d. Should the t curve be used to find a 95% confidence interval for the thickness of this metal? If so, find the confidence interval. If not, explain why not.

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Six measurements are taken of the thickness of a piece of

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Get Full Access to Statistics For Engineers And Scientists - 4 Edition - Chapter 5.3 - Problem 9e

Get Full Access to Statistics For Engineers And Scientists - 4 Edition - Chapter 5.3 - Problem 9e