Saccharin and Sucralose are compared with respect to their effect on body weight. The weight change was observed over a 12 week period and the following results were obtained. Assume normal distributions for both samples and unequal variances. Test the null hypothesis that the means are equal against the alternative that they are not using a 5% significance level. The value of the test statistic and the decision are Group Saccharin Sucralose n 25 24 ○ 2.60; reject the null hypothesis O 0.43 do not reject the null hypothesis O 2.02, reject the null hypothesis 0.53 do not reject the null hypothesis sample mean 1.17 -0.84 sample standard deviation 2.56 2.84

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Saccharin and Sucralose are compared with respect to their effect on body weight.
The weight change was observed over a 12 week period and the following results
were obtained. Assume normal distributions for both samples and unequal variances.
Test the null hypothesis that the means are equal against the alternative that they
are not using a 5% significance level. The value of the test statistic and the decision
are
Group
Saccharin
Sucralose
n
25
24
2.60; reject the null hypothesis
0.43 do not reject the null hypothesis
2.02, reject the null hypothesis
0.53 do not reject the null hypothesis
sample mean
1.17
-0.84
sample standard
deviation
2.56
2.84
Transcribed Image Text:Saccharin and Sucralose are compared with respect to their effect on body weight. The weight change was observed over a 12 week period and the following results were obtained. Assume normal distributions for both samples and unequal variances. Test the null hypothesis that the means are equal against the alternative that they are not using a 5% significance level. The value of the test statistic and the decision are Group Saccharin Sucralose n 25 24 2.60; reject the null hypothesis 0.43 do not reject the null hypothesis 2.02, reject the null hypothesis 0.53 do not reject the null hypothesis sample mean 1.17 -0.84 sample standard deviation 2.56 2.84
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