Mathematics, 10.03.2020 19:56 gugu1004
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 3958 third graders, the mean words per minute read was 22. Assume a population standard deviation of 4.9. Construct the confidence interval for the mean number of words a third grader can read per minute.
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