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# 5. Is there sufficient evidence that weekly quizzes have any effect on the midterm scores for gro...

## Question

###### 5. Is there sufficient evidence that weekly quizzes have any effect on the midterm scores for gro...

5.

Is there sufficient evidence that weekly quizzes have any effect on the midterm scores for groups with computer tutorials, on average? (Consider only groups required to answer the question; there is no need to factor in the other groups; in other words, ignore the groups not included.)

(a) Carry out the appropriate test to answer the question. Paste the corresponding StatCrunch output into your report

Define the null and alternative hypotheses in terms of the population means. What is the value of the test statistic and P-value? What is the null distribution of the test statistic? Based on the P- value, is there sufficient evidence to indicate any effect of weekly quizzes on the midterm scores for groups with computer tutorials?

(a) Two-sample t-test output: 3 points Appropriateness of pooling variances: 2 points Null and alternative hypotheses: 2 points Value of the test statistic: 2 points

the following is the data use stat crunch or excel to answer question 5

`Category code score  C 1 45 C 1 53 C 1 72 C 1 55 C 1 67 C 1 53 C 1 66 C 1 54 C 1 53 C 1 67 C 1 60 C 1 64 C 1 69 C 1 52 C 1 74 C 1 58 C 1 53 C 1 66 C 1 66 C 1 71 H 2 79 H 2 95 H 2 81 H 2 74 H 2 68 H 2 84 H 2 78 H 2 77 H 2 85 H 2 72 H 2 86 H 2 71 H 2 67 H 2 77 H 2 83 H 2 73 H 2 76 H 2 86 H 2 83 H 2 75 Q 3 58 Q 3 66 Q 3 67 Q 3 68 Q 3 64 Q 3 57 Q 3 58 Q 3 57 Q 3 75 Q 3 60 Q 3 63 Q 3 55 Q 3 64 Q 3 51 Q 3 60 Q 3 55 Q 3 61 Q 3 63 Q 3 76 Q 3 64 T 4 51 T 4 57 T 4 73 T 4 67 T 4 63 T 4 77 T 4 67 T 4 81 T 4 70 T 4 82 T 4 61 T 4 58 T 4 80 T 4 68 T 4 76 T 4 60 T 4 69 T 4 68 T 4 86 T 4 64 HT 5 78 HT 5 85 HT 5 86 HT 5 92 HT 5 84 HT 5 78 HT 5 79 HT 5 78 HT 5 95 HT 5 81 HT 5 83 HT 5 76 HT 5 83 HT 5 72 HT 5 81 HT 5 70 HT 5 81 HT 5 90 HT 5 95 HT 5 84 QT 6 55 QT 6 80 QT 6 67 QT 6 89 QT 6 90 QT 6 72 QT 6 75 QT 6 61 QT 6 68 QT 6 56 QT 6 63 QT 6 66 QT 6 64 QT 6 65 QT 6 62 QT 6 70 QT 6 83 QT 6 72 QT 6 65 QT 6 73`

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