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Stats I, Item # Q-02 At the Joseph Biden Middle School in Down-the-Shore, Delaware, student reading comprehension...

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Statistics

Stats I, Item # Q-02

At the Joseph Biden Middle School in Down-the-Shore, Delaware,student reading comprehension was evaluated, both pre-test andpost-test, bookending a pilot program intervention advocated by thedistrict superintendent and board of education.

Pre-Test

66

45

70

32

60

84

25

76

50

88

75

64

Post-Test

80

54

78

28

76

76

50

72

75

90

75

56

The vice-principal optimistically expected that the interventionwould improve reading comprehension scores, whereas the principalpessimistically anticipated that the instrument confused studentsand scores dropped. Identify the mean average scores on thepre-test and post test instruments, and what the average change wasacross all participants reported in this sample. Test with 90%confidence that the claim that the intervention had an impact ofsome kind. State the hypotheses and the conclusions, bothtechnically and contextually. Confirm the findings with thecorresponding p-value and confidence interval.

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