A sample of 31 observations is selected from a normal population. The sample mean is 69, and the population standard deviation is 8. Conduct the following test of hypothesis using the 0.01 significance level. H0: μ = 72H1: μ ≠ 72 Is this a one- or two-tailed test? multiple choice 1One-tailed testTwo-tailed test What is the decision rule? multiple choice 2Reject H0 if −2.576 < z < 2.576Reject H0 if z < −2.576 or z > 2.576 What is the value of the test statistic? (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.) What is your decision regarding H0? multiple choice 3Reject H0Fail to reject H0 e-1. What is the p-value? (Round your z value to 2 decimal places and final answer to 4 decimal places.) e-2. Interpret the p-value? (Round your z value to 2 decimal places and final answer to 2 decimal places.)

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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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A sample of 31 observations is selected from a normal population. The sample mean is 69, and the population standard deviation is 8. Conduct the following test of hypothesis using the 0.01 significance level.

H₀: μ = 72

H₁: μ ≠ 72

Is this a one- or two-tailed test?

multiple choice 1

One-tailed test
Two-tailed test

What is the decision rule?

multiple choice 2

Reject H₀ if −2.576 < z < 2.576
Reject H₀ if z < −2.576 or z > 2.576

What is the value of the test statistic? (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)

What is your decision regarding H₀?

multiple choice 3

Reject H₀
Fail to reject H₀

e-1. What is the p-value? (Round your z value to 2 decimal places and final answer to 4 decimal places.)

e-2. Interpret the p-value? (Round your z value to 2 decimal places and final answer to 2 decimal places.)

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