868
AVMultiple Choice

Prescriptive Test

Question 868 • 26-27 RPA - US History 1 CR

In an effort to improve scores on college-entrance exams, the principal at a large high school chooses 35 students at random who have already taken the exam. The students are enrolled in a six-week prep course to improve their scores. After the prep course, the students take the college-entrance exam again. The mean difference (first – second) in exam scores is –1.75 points with a standard deviation of 7.12 points. Assuming the conditions for inference are met, what is the P-value for testing the hypotheses H0 :μdiff = 0; Ha :μdiff > 0?Find the t-table here.

Answer
A
0.0775
B
0.1551
C
0.8449
D
0.9225
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