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The technology committee at a college has stated that the average time spent by students per...

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,

Math   Statistics-And-Probability   
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