Perform a onetailed test Then fill in the table belowSolutio

Perform a one-tailed test. Then fill in the table below.

Solution

The null hypothesis:

Ho: p=0.65

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The alternative hypothesis:

H1: p>0.65

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The type of test statistic:

Z

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The value of the test statistic:

Z=(phat-p)/sqrt(p*(1-p)/n)

=(122/180-0.65)/sqrt(0.65*(1-0.65)/180)

= 0.7813454

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The critical value at the 0.01 level significance:

It is a right-tailed test.

Given a=0.01, the critical value is Z(0.01) =2.326348 (from standard normal table)

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