Asked by Sherry
Twenty randomly selected students took the statistics final. If the sample mean was 88 and the ó =5.2, construct a 95% confidence interval for the mean score of the students.
Answers
Answered by
MathGuru
Formula:
CI95 = mean ± 1.96(sd/√n)
With your data:
CI95 = 88 ± 1.96(5.2/√20)
Calculate for the interval.
CI95 = mean ± 1.96(sd/√n)
With your data:
CI95 = 88 ± 1.96(5.2/√20)
Calculate for the interval.
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