You want to estimate the mean SAT score for a population of students with a 90% confidence interval. Assume that the population standard deviation is o = 100. If you want the margin of error to be no more than 10, what is the minimum sample size that is needed? (a) 17 (b) 38 (c) 271 (d) 385 (e) 1646

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You want to estimate the mean SAT score for a population of students with a 90% confidence interval.
Assume that the population standard deviation is o = 100. If you want the margin of error to be no more
than 10, what is the minimum sample size that is needed?
(a) 17
(b) 38
(c) 271
(d) 385
(e) 1646
Transcribed Image Text:You want to estimate the mean SAT score for a population of students with a 90% confidence interval. Assume that the population standard deviation is o = 100. If you want the margin of error to be no more than 10, what is the minimum sample size that is needed? (a) 17 (b) 38 (c) 271 (d) 385 (e) 1646
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