Which of the following is TRUE about a 99% confidence interval for the true average amount of time that teenagers spend on the Internet each day? We are 99% confident that the true average time that teenagers spend on the Internet per day lies within the confidence interval. The confidence interval contains 99% of the data values collected. 99% of all the confidence intervals constructed this way contain the true average amount of time teenagers spend on the Internet each day. Group of answer choices 1 and 3 1,2 and 3 3 only 1 only

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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Which of the following is TRUE about a 99% confidence interval for the true average amount of time that teenagers spend on the Internet each day?

  1. We are 99% confident that the true average time that teenagers spend on the Internet per day lies within the confidence interval.
  2. The confidence interval contains 99% of the data values collected.
  3. 99% of all the confidence intervals constructed this way contain the true average amount of time teenagers spend on the Internet each day.
Group of answer choices
1 and 3
1,2 and 3
3 only
1 only 
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