Answer to Question #11131 in Statistics and Probability for Jennie
a. What statistical test should be used to analyze the data?
b. Identify H0 and Ha for this study
c. Conduct the appropriate analysis
d. Should H0 be rejected? What should the researcher conclude?
b) H0: p = 0.15
Ha: p not equal 0.15
c) z = (phat - p)/sqrt(p*(1-p)/N)
z = (9/80 - 0.15)/sqrt(0.15*0.85/80)
z = -0.93933
d)This test statistic is not outside those values.
Therefore, we do not reject the null hypothesis.
The rate at the school is not different from the nationwide rate.
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