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...



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)



Jun 03, 2022
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