(Answered) Jullian was curious if regular excise really helps weight

Finance

Jullian was curious if regular excise really helps weight loss,she decided to perform a hypothesis test. A random sample of 5 Kansas State students was chosen. The students took a 30-minute exercise every day for 6 months. The weight was recorded for each individual before and after the exercise regimen. Does the data below suggest that regular exercise helps weight loss?

Weight (pounds)

Subject Before After

1 160 120

2 170 168

3 190 175

4 165 165

5 200 190

Assume we want to use a 0.05 significance level to test the claim.

(a) Identify the null hypothesis and the alternative hypothesis.

(b) Determine the test statistic.

(d) Is there sufficient evident to support the claim that regular exercise helps weight loss? Justify your conclusion.

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