A sample of 17 Math SAT scores for women was collected. The mean score for the sample was 496 and the sample standard deviation was 115 Find the 95% confidence interval for the population mean u. Assume the population has a normal distribution. Confidence Interval: ( Enter numbers correct to one unit.

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A sample of 17 Math SAT scores for women was collected. The mean score for the sample was 496 and the sample standard deviation was 115.
Find the 95% confidence interval for the population mean µ. Assume the population has a normal distribution.
Confidence Interval: (
Enter numbers correct to one unit.
Transcribed Image Text:A sample of 17 Math SAT scores for women was collected. The mean score for the sample was 496 and the sample standard deviation was 115. Find the 95% confidence interval for the population mean µ. Assume the population has a normal distribution. Confidence Interval: ( Enter numbers correct to one unit.
When people smoke, the nicotine they absorb is converted to cotinine, which can be measured. A sample of 35 smokers has a mean cotinine
level of 178.3. Assuming that ơ is known to be 107.5, find a 90% confidence interval estimate of the mean cotinine level of all smokers.
Confidence Interval: (
Enter numbers correct to one decimal place.
Transcribed Image Text:When people smoke, the nicotine they absorb is converted to cotinine, which can be measured. A sample of 35 smokers has a mean cotinine level of 178.3. Assuming that ơ is known to be 107.5, find a 90% confidence interval estimate of the mean cotinine level of all smokers. Confidence Interval: ( Enter numbers correct to one decimal place.
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