Question

# A researcher wants to test if the mean annual salary of all lawyers in a city...

A researcher wants to test if the mean annual salary of all lawyers in a city is different from \$110,000. A random sample of 51 lawyers selected from the city reveals a mean annual salary of \$105000. Assume that σ=\$20000, and that the test is to be made at the 2% significance level.

What are the critical values of z?

 -1.645 and 1.645
 -1.28 and 1.28
 -2.33 and 2.33
 -2.05 and 2.05

What is the value of the test statistic, z, rounded to three decimal places?

Enter you answer; What is the value of the test statistic, z?

What is the p-value for this hypothesis test, rounded to four decimal places?

Enter you answer; What is the p-value for this hypothesis test?

Should you reject or fail to reject the null hypothesis in this test?

Choose your answer; Should you reject or fail to reject the null hypothesis in this test?

Reject.Fail to reject.

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