Answered: A random sample of 10 shipments of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A random sample of 10 shipments of stick-on labels showed the following order sizes.

36,575

30,153

34,820

10,554

15,801

14,198

38,830

56,309

19,461

20,729

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(a) Construct a 95 percent confidence interval for the true mean order size. (Round your standard deviation answer to 1 decimal place and t-value to 3 decimal places. Round your answers to the nearest whole number.)

The 95 percent confidence interval ________ to _________

(b) The confidence interval can be made narrower by:

decreasing the sample size or decreasing the confidence level.
increasing the sample size or increasing the confidence level.
increasing the sample size or decreasing the confidence level.
decreasing the sample size or increasing the confidence level.

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