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A group of 56 randomly selected students have a mean score of 30.8 and a standard deviation of 4.5 on a placement test. Find a...Asked by Erica
A group of 56 randomly selected students have a mean score of 30.8 and a
standard deviation of ó = 4.5 on a placement test. Find a 95% confidence interval
for the mean score, ì, of all students taking the test.
standard deviation of ó = 4.5 on a placement test. Find a 95% confidence interval
for the mean score, ì, of all students taking the test.
Answers
Answered by
sheila
29.8 < m < 31.8
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