A market research firm reported that the mean annual earnings of all family practitioners in the United States was $178,011. A random sample of 38 family practitioners in New York that month had mean earnings of $\bar { x } = \$ 216,104$ with a standard deviation of $35,332. You wish to test whether family practitioners in New York make more than the national average.
i). State the null and alternate hypotheses.
ii). Compute the value of the test statistic and state the number of degrees of freedom.
iii). State a conclusion regarding H₀ . Use the $\alpha$ =0.1 level of significance.

Question

A market research firm reported that the mean annual earnings of all family practitioners in the United States was $178,011. A random sample of 38 family practitioners in New York that month had mean earnings of

\bar { x } = \$ 216,104

with a standard deviation of $35,332. You wish to test whether family practitioners in New York make more than the national average.
i). State the null and alternate hypotheses.
ii). Compute the value of the test statistic and state the number of degrees of freedom.
iii). State a conclusion regarding H₀ . Use the

\alpha

=0.1 level of significance.

Quizplus · Accepted Answer

The Answer of A market research firm reported that the mean annual earnings of all family practitioners in the United States was $178,011. A random sample of 38 family practitioners in New York that month had mean earnings of $\bar { x } = \$ 216,104$ with a standard deviation of $35,332. You wish to test whether family practitioners in New York make more than the national average. i). State the null and alternate hypotheses. ii). Compute the value of the test statistic and state the number of degrees of freedom. iii). State a conclusion regarding H₀ . Use the $\alpha$=0.1 level of significance.

A Market Research Firm Reported That the Mean Annual Earnings xˉ=$216,104\bar { x } = \$ 216,104xˉ=$216,104

A Market Research Firm Reported That the Mean Annual Earnings $\bar { x } = \$ 216,104$