Mathematics, 20.02.2020 03:29 mccarthyrookie6491
Difference of two Means. A national testing agency decided to do an experiment to see about the value of using a computer in a mathematics class. One group of students (Group A) used a computer in their class, while another group (Group B) did not. The main variable of interest was a test score, and we want to see if the mean test score for Group A is Larger than Group B. Use alpha = .05 for your test.
The sample statistics are given below for each group.
Group A Group B
Mean Score 320 302
Standard Deviation 29.5 32.1
N 20 20
We can assume the two variances are equal. Based on the results of a hypothesis test, your conclusion would be to:
a. Fal to reject the Null Hypothesis that the mean Means are equal.
b. Reject the Null Hypothesis that the mean Means are equal.
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