Please Help With This 2part Problem 1 (117.21 KiB) Viewed 28 times
40- Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value ta/2, (b) find the critical value Zx/2, or (c) state that neither the normal distribution nor the t distribution applies. 30- Frequency 20- 10- The confidence level is 99%, o is not known, and the histogram of 60 player salaries (in thousands of dollars) of football players on a team is as shown. 0 4000 8000 12000 16000 20000 Salary (thousands of dollars) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. ta/2 (Round to two decimal places as needed.) OB ZQ/2 = (Round to two decimal places as needed.) O C. Neither the normal distribution nor the t distribution applies.
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 95% confidence interval estimate of the mean amount of mercury in the population. Does it appear that there is too much mercury in tuna sushi? 0.53 0.68 0.11 0.90 1.23 0.56 0.86 O What is the confidence interval estimate of the population mean u? ppm<u<ppm < (Round to three decimal places as needed.)
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