A survey about duration of a job task done by a person with or without a course?

No course group


Sample size n1 is 15, sample mean x1 is 5.3 hours, sample standard deviation S1 is 2 hours





With course group


Sample size n2 is 13, mean x2 is 4.9 hours, sample std deviation S2 is 2.8 hours





Based on data, what should be concluded about the average time it takes to complete the job with and without the course offered?


Use alpha of 0.01


(Perform the 6 steps hypothesis test)

A survey about duration of a job task done by a person with or without a course?
There is much more uncertainty with group 2. The spread of the sdv is bigger and the fewer of th egroup size are the two reasons to add to error.

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