A software company is interested in approving customer satisfaction rate from the 60%currently claimed. The company sponsored survey of 245 customers and found that 156 customers were satisfied What is the test statistic z HUMAT240Master1/chapter/7/section/1lied Statistics home > 7.1: Hypothesis test for a population proportionCHALLENGE7.1.3: Hypothesis test for a population proportion.ACTIVITYJump to level 1A software company is interested in improving customer satisfaction rate from the60% currently claimed. The company sponsored a survey of 245 customers andfound that 156 customers were satisfied.What is the test statistic z? Ex: 2.221CheckNextFeedback?

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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 software company is interested in approving customer satisfaction rate from the 60%currently claimed. The company sponsored survey of 245 customers and found that 156 customers were satisfied What is the test statistic z

HUMAT240Master1/chapter/7/section/1
lied Statistics home > 7.1: Hypothesis test for a population proportion
CHALLENGE
7.1.3: Hypothesis test for a population proportion.
ACTIVITY
Jump to level 1
A software company is interested in improving customer satisfaction rate from the
60% currently claimed. The company sponsored a survey of 245 customers and
found that 156 customers were satisfied.
What is the test statistic z? Ex: 2.22
1
Check
Next
Feedback?

Expert Solution

Step 1

$G i v e n, p o p u l a t i o n p r o p o r t i o n (P) = 0.60 S a m p l e s i z e (n) = 245 A n d X = 156 S a m p l e p r o p o r t i o n (\hat{p}) = \frac{X}{n} \hat{p} = \frac{156}{245} = 0.6367$

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