Each month the National Association of Purchasing Managers surveys purchasing managers and publishes the NAPM index. One of the questions asked on the survey is: Do you think the economy is contracting? Last month, of the 300 responding managers, 160 answered yes to the question. This month, 170 of the 290 managers indicated they felt the economy was contracting. At the 0.05 significance level, can we conclude that a larger proportion of the purchasing managers believe the economy is contracting this month? a. State the null and alternate hypotheses. Ho I last month Tt this month H: t last month t this month

Each month the National Association of Purchasing Managers surveys purchasing managers and publishes the NAPM index. One of the questions asked on the survey is: Do you think the economy is contracting? Last month, of the 300 responding managers, 160 answered yes to the question. This month, 170 of the 290 managers indicated they felt the economy was contracting. At the 0.05 significance level, can we conclude that a larger proportion of the purchasing managers believe the economy is contracting this month? a. State the null and alternate hypotheses. Ho I last month Tt this month H: t last month t this month

Name: b. Make the decision rule. (Negative amount should be indicated by a
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Description: b. Make the decision rule. (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)Ho is rejected if z <c. Evaluate the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 2

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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Concept explainers

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

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Question

b. Make the decision rule. (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)
Ho is rejected if z <
c. Evaluate the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)
es
Test statistic
d. What is the decision regarding the null hypothesis?
Ho is
We
conclude an increased proportion believe the economy is contracting this month.

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