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An educational psychologist wishes to know the mean number of words a third grader can read...

An educational psychologist wishes to know the mean number of words a third grader can read per minute. She wants to make an estimate at the 98% level of confidence. For a sample of 948 third graders, the mean words per minute read was 32.8. Assume a population standard deviation of 4.4. Construct the confidence interval for the mean number of words a third grader can read per minute. Round your answers to one decimal place.

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Answer #1

Solution:-

98% Confidence interval for the mean is (32.5,33.1)

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