A survey was conducted that asked 1017 people how many books they had read in the past year. Results indicated that x = 12.4 books and s = 16.6 books. Construct a 99% confidence interval for the mean number of books people read. Interpret the interval. Click the icon to view the table of critical t-values. Construct a 99% confidence interval for the mean number of books people read and interpret the result. Select the correct choice below and fill in the answer boxes to complete your choice. (Use ascending order. Round to two decimal places as needed.) A. There is 99% confidence that the population mean number of books read is between and . B. There is a 99% probability that the true mean number of books read is between and . C. If repeated samples are taken, 99% of them will have a sample mean between and .
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Since we want a 99% confidence interval, we need to find the critical t-value with 1016 degrees of freedom (df = n-1) and a significance level of 0.01/2 = 0.005. From the table of critical t-values, we find that t = 2.576. Plugging in the values, we get: Margin Show moreā¦
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