A group of 5 statistics students receive the following grades on a test: 81, 74, 62, 92, and 76. An intervention plan is used and the students increased their scores on a retest to: 85, 79, 75, 95 and 84. At the 0.05 significance level, is the intervention plan helpful in increasing the grades?
a. State the null and alternate hypotheses
Ho : H1:
b.State the decision rule.
c. Compute the value of the test statistic.
d. Estimate the p-value.
e. What is your decision regarding the null hypothesis? Interpret the result.