From previous studies, it is concluded that 60% of phone numbers in a certain city are unlisted. A researcher claims that the proportion is smaller than 60% and decides to survey 600 working adults. Test the researcher's claim at the α=0.025 significance level.Preliminary:Is it safe to assume that n≤0.05 of all subjects in the population?YesNoVerify np(1−p)≥10. Round your answer to one decimal place.np(1−p)=Test the claim:H0:μ=0.6Ha:μ≠0.6H0:μ≥0.6Ha:μ<0.6H0:p≥0.6Ha:p<0.6H0:μ≤0.6Ha:μ>0.6H0:p=0.6Ha:p≠0.6H0:p≤0.6Ha:p>0.6The null and alternative hypotheses areThe test is

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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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From previous studies, it is concluded that 60% of phone numbers in a certain city are unlisted. A researcher claims that the proportion is smaller than 60% and decides to survey 600 working adults. Test the researcher's claim at the α=0.025 significance level.

Preliminary:

Is it safe to assume that n≤0.05 of all subjects in the population?
- Yes
- No
Verify np(1−p)≥10. Round your answer to one decimal place.

np(1−p)=

Test the claim:

- H0:μ=0.6
  Ha:μ≠0.6
- H0:μ≥0.6
  Ha:μ<0.6
- H0:p≥0.6
  Ha:p<0.6
- H0:μ≤0.6
  Ha:μ>0.6
- H0:p=0.6
  Ha:p≠0.6
- H0:p≤0.6
  Ha:p>0.6The null and alternative hypotheses are
The test is

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