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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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Question

A sample mean, sample size, and population standard deviation are provided below. Use the one-mean z-test to perform the required hypothesis test at the 10% significance level.

x=26

n=20,

σ=6

H0:

μ=24

Ha:

μ>24

The test statistic is z=___________

(Round to two decimal places as needed.)

Identify the critical value(s). Select the correct choice below and fill in the answer box within your choice.

(Round to two decimal places as needed.)

A. The critical values are ±zα/2=±______________

B. The critical value is −zα=_____________

C. The critical value is zα=___________

_____ (Reject, do not reject) the null hypothesis. The data ____________________(do not provide, provide sufficient) evidence to conclude that the mean is (less than 40, equal to 40, not equal to 40, greater than 40)

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