In an early study, researchers at a university found that 33% of the first year students had received at least one A in their first semester. Administrators are concerned that grade inflation has caused this percentage to increase. In a more recent study, of a random sample of 500 first year students, 185 had at least one A in their first semester.
-How much evidence do we have to reject the null hypothesis in favour of the alternative hypothesis that the percent receiving at least one A is now greater than one third?
A)No evidence
B)Some evidence
C)Strong evidence
D)Very strong evidence
E)Extremely strong evidence

Question

Quizplus · Accepted Answer

We have some evidence to reject the null hypothesis in favor of the alternative hypothesis that the percent receiving at least one A is now greater than one third. However, we cannot conclude with very strong or extremely strong evidence without conducting further statistical tests and analyzing more data. Therefore, the best choice is C), which indicates that we have strong evidence to support the alternative hypothesis.

In an Early Study, Researchers at a University Found That