For the following problem provide the following information

For the following problem, provide the following information.
A) level of significance; state the null and alternative hypotheses. State whether the test will be left tail, right tail, or two tail.

B) Will the distribution be standard normal or student T? What is the sample test statistic? C) State the P

Solution

A) level of significance; state the null and alternative hypotheses. State whether the test will be left tail, right tail, or two tail.

The level of significance = a=0.01

Null hypothesis: p=0.75

Alternative hypothesis: p<0.75

It is a left-tailed test.

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B) Will the distribution be standard normal or student T? What is the sample test statistic?

Standard normal.

The test statistic is

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

=(125/189-0.75)/sqrt(0.75*0.25/189)

=-2.81

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C) State the P