25. You are estimating the population mean and the standard deviation of the population is NOT known. Which distribution do you use in the confidence interval formula? a. Use a Z distribution. b. Use a t distribution with 30 degrees of freedom. c. Use a t distribution with n-1 degrees of freedom. d. Use at distribution with n degrees of freedom.

25. You are estimating the population mean and the standard deviation of the population is NOT known. Which distribution do you use in the confidence interval formula? a. Use a Z distribution. b. Use a t distribution with 30 degrees of freedom. c. Use a t distribution with n-1 degrees of freedom. d. Use at distribution with n degrees of freedom.

Name: 25. You are estimating the population mean and the standarddeviation
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Description: 25. You are estimating the population mean and the standarddeviation of the population is NOT known. Whichdistribution do you use in the confidence interval formula?a. Use a Z distribution.b. Use at distribution with 30 degrees of freedom.c. Use at

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

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Question

25. You are estimating the population mean and the standard
deviation of the population is NOT known. Which
distribution do you use in the confidence interval formula?
a. Use a Z distribution.
b. Use at distribution with 30 degrees of freedom.
c. Use at distribution with n-1 degrees of freedom.
d. Use a t distribution with n degrees of freedom.
с.

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