Students in a biology class have been randomly assigned to one of the two mentors for...

Students in a biology class have been randomly assigned to one of the two mentors for the laboratory portion of the class. A random sample of final examination scores has been selected from students supervised by each mentor, with the following results:
Mentor A: 78, 78, 71, 89, 80, 93, 73, 76
Mentor B: 74, 81, 65, 73, 80, 63, 71, 64, 50, 80
At the 0.05 significance level, is there a difference in the mean scores?

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Expert Solution

So, we reject H₀ at 0.05 significance level i.e. there is difference in mean scores.

[t values are obtained from t-distribution table:

]

orchestra answered 1 year ago

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