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A statistical analysis is made of the midterm and final scores in a large course, with...

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Statistics

A statistical analysis is made of the midterm and final scoresin a large course, with the following results: Average midtermscore = 65, SD = 10, Average final score = 65, SD = 12, r = 0.6 Thescatter diagram is football shaped.

a. About what percentage of the class final scores above 70?

b. A student midterm was 75. Predict his final score

c. Suppose the percentile rank of midterm score was 95%, predicthis percentile rank on the final score

d. Of those whose midterm score was 70, about what percentage offinal scores over 80?

Answer & Explanation Solved by verified expert
4.1 Ratings (856 Votes)
Let X shows the midterm score and    See Answer
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