To plan the course offerings for the next year a university department dean needs to estimate what impact the "No Child Left Behind" legislation might have on the teacher credentialing program. Historically, 40% of this university's pre-service teachers have qualified for paid internship positions each year. The Dean of Education looks at a random sample of internship applications to see what proportion indicate the applicant has achieved the content-mastery that is required for the internship. Based on these data he creates a 90% confidence interval of (33%, 41%). Could this confidence interval be used to test the hypothesis H0: p = 0.40 versus HA: p < 0.40 at the α = 0.05 level of significance?
◦ No, because the dean should have used a 95% confidence interval.
◦ Yes, since 40% is in the confidence interval he fails to reject the null hypothesis, concluding that there is not strong enough evidence of any change in the percent of qualified applicants.
◦ No, because the dean only reviewed a sample of the applicants instead of all of them.
◦ Yes, since 40% is not the center of the confidence interval he rejects the null hypothesis, concluding that the percentage of qualified applicants will decrease.
◦ Yes, since 40% is in the confidence interval he accepts the null hypothesis, concluding that the percentage of applicants qualified for paid internship positions will stay the same.
Body plan axes in animals and plants
On May 15, 1916, after deliberating for one hour, an all-white jury in Waco, Texas, found seventeen-
Distribution of Thunderstorms: Approximately 14.5 million thunderstorms occur each year across the ...
The average weight gain between Thanksgiving and New Year's Day is about a pound
Body Plan of a Crocodile
Pseudocoelomate body plan of a roundworm