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Suppose that the average time spent per day with digital media several years ago was 3 hours and 41 minutes. For last year, a random
Suppose that the average time spent per day with digital media several years ago was 3 hours and 41 minutes. For last year, a random sample of 20 adults in a certain region spent the numbers of hours per day with digital med given in the accompanying table. Preliminary data analyses indicate that the t-interval procedure can reasonably be applied. Find and interpret a 99% confidence interval for last year's mean time spent per day with digital media by adults of the region. (Note: x = 5.16 hr and s = 2.24 hr.) Click here to view the digital media times. Click here to view page 1 of the t-table. Click here to view page 2 of the t-table. The 99% confidence interval is from 3.73 hour(s) to 6.59 hour(s). (Round to two decimal places as needed.) Interpret the 99% confidence interval. Select all that apply. O A. 99% of all adults in the region spent amounts of time per day on digital media last year that are between the interval's bounds. B. There is a 99% chance that the mean amount of time spent per day on digital media last year by all adults in the region is between the interval's bounds. [ C. With 99% confidence, the mean amount of time spent per day on digital media last year by all adults in the region is between the interval's bounds. OD. 99% of all possible random samples of 20 adults in the region have mean amounts of time spent per day on digital media last year that are between the interval's bounds
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