Answer to Question #333679 in Statistics and Probability for Lenard

Question

Student scores on a test that measures self-image are approximately normally distributed. This test is administered to 20 science students and the mean and standard deviation of their test scores are 88 and 24, respectively.

a) Find a 98% confidence interval of the true mean.

b) What can we assert with 98% confidence about the possible size of our error if we estimate the mean score to be 88?

Answer 1

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