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Probability Distribution Application Question A class of 160 students took a final examination in mathematics. The mean score was 68 and the standard deviation was

Probability Distribution Application Question

A class of 160 students took a final examination in mathematics. The mean score was 68 and the standard deviation was 13.

a) Determine the percentile rank of a score of 88, assuming that the marks were normally distributed.

b) What is the probability that someone chosen at random had a mark between 57 and 74?

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