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You are testing the claim that the mean GPA of night students is different than the...

You are testing the claim that the mean GPA of night students is different than the mean GPA of day students.

You sample 60 night students, and the sample mean GPA is 2.93 with a standard deviation of 0.67

You sample 40 day students, and the sample mean GPA is 2.58 with a standard deviation of 0.57

Calculate the test statistic, rounded to 2 decimal places

Math   Statistics-And-Probability   
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Answer #1

Here the sample size of both the population is very large so we will apply z statistics .

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