A food safety guideline is that the mercury in fish should be below 1 part per million (ppm). Listed below are the amounts of mercury (ppm) found in tuna sushi sampled at different stores in a major city. Construct a 98% confidence interval estimate of the mean amount of mercury in the population. Does it appear that there is too much mercury in tuna sushi? 0.58 0.72 0.10 0.89 1.38 0.57 0.89 What is the confidence interval estimate of the population mean µ? |ppm <μ

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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A food safety guideline is that the mercury in fish should be below 1 part per million (ppm). Listed below are the amounts of mercury (ppm) found in tuna sushi sampled
at different stores in a major city. Construct a 98% confidence interval estimate of the mean amount of mercury in the population. Does it appear that there is too much
mercury in tuna sushi?
0.58 0.72 0.10 0.89 1.38 0.57 0.89
What is the confidence interval estimate of the population mean μ?
ppm<μ< ppm
(Round to three decimal places as needed.)
C
Transcribed Image Text:A food safety guideline is that the mercury in fish should be below 1 part per million (ppm). Listed below are the amounts of mercury (ppm) found in tuna sushi sampled at different stores in a major city. Construct a 98% confidence interval estimate of the mean amount of mercury in the population. Does it appear that there is too much mercury in tuna sushi? 0.58 0.72 0.10 0.89 1.38 0.57 0.89 What is the confidence interval estimate of the population mean μ? ppm<μ< ppm (Round to three decimal places as needed.) C
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 18 subjects had a mean wake time of 100.0
min. After treatment, the 18 subjects had a mean wake time of 75.7 min and a standard deviation of 20.4 min. Assume that the 18 sample values appear to be from a
normally distributed population and construct a 95% confidence interval estimate of the mean wake time for a population with drug treatments. What does the result
suggest about the mean wake time of 100.0 min before the treatment? Does the drug appear to be effective?
Construct the 95% confidence interval estimate of the mean wake time for a population with the treatment.
min<μ<min
(Round to one decimal place as needed.)
Transcribed Image Text:A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 18 subjects had a mean wake time of 100.0 min. After treatment, the 18 subjects had a mean wake time of 75.7 min and a standard deviation of 20.4 min. Assume that the 18 sample values appear to be from a normally distributed population and construct a 95% confidence interval estimate of the mean wake time for a population with drug treatments. What does the result suggest about the mean wake time of 100.0 min before the treatment? Does the drug appear to be effective? Construct the 95% confidence interval estimate of the mean wake time for a population with the treatment. min<μ<min (Round to one decimal place as needed.)
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