Question

Let m1 and m2 denote the true average ages (in years) of students at two different...

Let m1 and m2 denote the true average ages (in years) of students at two different colleges. Assume both population distributions are normal with equal variances. Calculate and interpret a 99% confidence interval for m1 - m2 using the following data.

Sample Size Sample Mean Sample Standard Deviation
College 1 10 25 2
College 2 9 24 3

Group of answer choices

A) 99% C.I. is (-2.36, 4.36). The sample supports the claim that the two colleges` students have significantly different ages.

B) 99% C.I. is (-2.10, -0.316). The sample supports the claim that the two colleges` students have significantly different ages.

C) 99% C.I. is (-2.36, 4.36). The sample supports the claim that the two colleges` students do not have significantly different ages.

D) 99% C.I. is (-2.10, -0.316). The sample supports the claim that the two colleges` students do not have significantly different ages.

Math   Statistics-And-Probability   
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