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 90​% confidence interval estimate of the mean amount of mercury in the population. Does it appear that there is too much mercury in tuna​ sushi? What is the confidence interval estimate of the population mean mu​?

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A: Given  Margin of error=8, level of significance ɑ=0.05, standard deviations σ=10

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Q: Find the critical t value to use in making a 99% confidence interval for a mean if the sample size…

A: Solution-: Given: n=7,α=0.01 We find the critical t- value to use in making a 99% C.I. for a mean

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Q: Find the critical t value to use in making a 98% confidence interval for a mean if the sample size…

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Q: How large a sample should be selected to provide a 95% confidence interval with a margin of error of…

A: Given : Margin of error = 5 α = 0.05 Population standard deviation = σ = 30 zα2 = z0.052 = 1.96

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Q: Find the critical value, t c,  used for a 95% confidence interval for the mean with a sample size of…

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