The average exam score for the statistics course is 74%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is higher. The exam scores for the 15 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal.

73, 98, 63, 66, 85, 63, 87, 81, 65, 90, 88, 72, 98, 90, 91

What can be concluded at the the = 0.05 level of significance level of significance?

1. For this study, we should use (Select an answer) (z-test for a population proportion or t-test for a population mean)
2. The null and alternative hypotheses would be:

H0: ?( , p) Select an answer (> < = )

H1: ?( p, ) Select an answer (= < > )

1. The test statistic ? (t or z) = (please show your answer to 3 decimal places.)
2. The p-value = (Please show your answer to 4 decimal places.)
3. The p-value is ? (,>)
4. Based on this, we should (Select an answer) (reject, fail to reject, accept) the null hypothesis.