Mathematics, 22.03.2021 21:30 koboshy23
A random sample of 35 business students required an average of 50.7 minutes to complete a statistics exam. Assume that the population standard deviation to complete the exam was 10.4 minutes. The 95% confidence interval around this sample mean is . Group of answer choices (48.9, 52.5) (49.8, 51.6) (47.3, 54.1) (45.4, 56.0)
Answers: 1
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
.
, so Z = 1.96.
is the standard deviation of the population and n is the size of the sample.
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A random sample of 35 business students required an average of 50.7 minutes to complete a statistics...
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