PROBLEM NO. 2 (20 POINTS) Ten individuals have participated in a diet-modificati

Question

PROBLEM NO. 2 (20 POINTS) Ten individuals have participated in a diet-modification program to stimulate weight loss. Their weight both befor is shown in the following list. e and after participation in the program Weight (lb.) Subject Before After 195 221 247 187 210 215 175 197 199 221 a) Is there evidence to support the claim that this particular diet-modification program is effective in producing a mean weight reduction? Use a = 0.05. b) Is there evidence to support the claim that this particular diet modification 0.05. program will result in a mean weight loss of at least 10 pounds? Use For hypothesis test, use all three methods: fixed significance level criteria, P-value and confidence interval.

Explanation / Answer

a)

As p-value is less than the significance level of 0.05, we reject the null hypothesis

This means there are significant evidence to conclude that diet program is effective.

b)

As p-value is less than the significance level of 0.05, we reject the null hypothesis

there are significant evidence to conclude that diet program is effective enough to reduce weight by at least 10 pounds

Null Hypothesis Alternate Hypothesis H0: 1 - 2 = 0 Ha: 1 - 2 > 0

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