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We want to examine the effectiveness of Diet Plan A.  We gather participants and divide them into...

We want to examine the effectiveness of Diet Plan A.  We gather participants and divide them into two different groups.  The first group: 'Diet Plan A', followed this plan for three weeks and the amount of weight loss in pounds was measured.  The second group: 'Control', followed their regular eating habits and the amount of weight lost in pounds was measured.  The data is below:

Diet Plan A Control
4 6
10 3
7 2
6 8
8 4

Assuming we are seeking Diet Plan A to produce more weight loss (α = .05), what is the test statistic?

Math   Statistics-And-Probability   
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TOPIC:Test statistic for the difference between two population means.

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