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

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Topic Video
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.
Transcribed Image Text: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.
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
Tt this month
Transcribed Image Text: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 Tt this month
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 5 steps

Blurred answer
Knowledge Booster
Hypothesis Tests and Confidence Intervals for Proportions
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman