A recent survey showed that from a sample of 500 packages delivered by a Postal Service, 480were delivered on time.b) The manager of the Postal Services claims that 98 percent of their mail are delivered ontime. He wants to test at the 1% significance level to determine whether the true proportionis less than 98 percent.i. Give the null and alternative hypothesis of this test.ii. Determine the critical value(s) of this test.iii. Compute the value of the test statistic.iv. State the decision rule.v. Give your decision based on the available sample evidence.vi. Hence, state your conclusion.

Givenp0=0.98x=480n=500p^=xn=480500=0.96significance level(α)=1%=0.01

Answered: A recent survey showed that from a…

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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b) The manager of the Postal Services claims that 98 percent of their mail are delivered ontime. He wants to test at the 1% significance level to determine whether the true proportionis less than 98 percent ii. Determine the critical value(s) of this test.
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