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 40 night students, and the sample mean GPA is 2.28 with a standard deviation of 0.56

You sample 30 day students, and the sample mean GPA is 2.13 with a standard deviation of 0.87

Calculate the test statistic, rounded to 2 decimal places

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Expert Solution

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

For the night students, sample size is 40, sample mean is 2.28 and standard deviation is 0.56.

For the day students, sample size is 30, sample mean is 2.13 and standard deviation is 0.87.

We have to calculate the test statistic, rounded to two decimal places.

So, we are testing

In this case,

So, the test statistic is

So, the test statistic, rounded off to two decimal places is 0.82.

orchestra answered 1 year ago

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