The technology committee at a college has stated that the average time spent by students per lab visit has increased, and the increase supports the need for increased lab fees. To substantiate this claim, the committee randomly samples 12 student lab visits and notes the amount of time spent using the computer. The times are given in the accompanying table.
Time Mins: 79, 62, 56, 55, 66, 69, 67, 68, 134, 55, 9, 62.
The previous mean amount of time spent using the lab computer was 59 minutes. Find a 95% confidence interval for the true mean
- The 95% confidence interval including any outliers that may exist is ____ minutes. (Round to one decimal as needed)
- The 95% confidence interval excluding any outliers that mat exist is ____ minutes,
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