Question 714895: Finding Confidence Intervals. In Exercises use the given degree ojconfidence
and sample data to find a confidence interval/or the population standard deviation. In each case, assume that the-population has a normal distribution.
One of the following would be fine. I don't know if I should use the x-bar in any of the questions below.
5. Math SAT scores for women: 95% confidence; n = 15, x-bar = 496, s = 108
6. Salaries of airline pilots: 99% confidence; n = 12, x-bar = $97,334, s = $17,747
7. IQ scores of professional athletes: 90% confidence; n = 25, x-bar = 104, s = 12
8. Final exam test scores in a statistics course: 99% confidence; n = 27, x-bar = 78.8,
s = 12.2
Answer by lynnlo(4176)   (Show Source):
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