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A group of 5 statistics students receive the following grades on a test: 81, 74, 62,...

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: m

b. State the decision rule.

c. Compute the value of the test statistic.

d. Compute the p-value.

e. What is your decision regarding the null hypothesis? Interpret the result.

Math   Statistics-And-Probability   
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