(b) Based on your sample, enter the lower and upper limits to graph the 95% confidence interval for the population mean of the battery lifetimes for al phones of the manufacturer's latest model. 0.00 0.00 2.00 95% confidence interval: 4.00 6.00 8.00 10.00 10.00

We considered the differences between the temperature readings in January 1 of 1968 and 2008 at 51 locations in the continental US in Exercise 5,19. The mean and standard deviation of the reported differences are 1.1 degrees and 4.9 degrees respectively. (a) Calculate a 90% confidence interval for the average difference between the temperature measurements between 1968 and 2008. lower bound: x degrees(please round to two decimal places) upper bound: X degrees(please round to two decimal places) (b) Interpret this interval in context. O We are 90% confident that the mean difference in these sample temperatures is contained between the lower bound and upper bound O There is a 90% chance that the difference in temperatures in a city from year to year will be between the lower bound and upper bound O We are 90% confident that 90% of the time the differences in temperatures from year to year will be between the lower bound and upper bound O We are 90% confident that the true mean difference…

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One year, the mean age of an inmate on death row was 40.9 years. A sociologist wondered whether the mean age of a death-row inmate has changed since then. She randomly selects 32 death-row inmates and finds that their mean age is 39.4, with a standard deviation of 9.5. Construct a 95% confidence interval about the mean age. What does the interval imply? Click the icon to view the table of critical t-values. Choose the correct hypotheses. Ho: H₁: (Type integers or decimals. Do not round.) Construct a 95% confidence interval about the mean age. With 95% confidence, the mean age of a death row inmate is between What does the interval imply? years and years. (Round to two decimal places as needed.) O A. Since the mean age from the earlier year is contained in the interval, there is sufficient evidence to conclude that the mean age had changed. B. Since the mean age from the earlier year is not contained in the interval, there is not sufficient evidence to conclude that the mean age had…