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The following sample data show the number of hours per day 12 adults spent in from...

  1. The following sample data show the number of hours per day 12 adults spent in from of screens what television-related content: 1.3, 4.9, 4.2, 4.8, 7.6, 6.9, 5.4, 2.2, 5.3, 1.8, 2.4, 8.3.
    1. Using α = 0.01 determine if there is sufficient evidence to show that on average adults spend more than 4 hours per day in front of screens watching television-related content.
    2. Construct a 99% confidence interval to estimate the average number of hours per day adults spend in front of screens watching television-related content.
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