Use the critical numbers to determine whether there is evidence (in this first study) that the mean weight gain is different for the two. groups. Explain how you decided, using complete sentences. A There is exidence at level of significance 0.05 that the

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Solve these 2 questions and explain your answer please
Use the critical numbers to determine whether
there is evidence (in this first study) that the
mean weight gain is different for the two.
groups. Explain how you decided, using
complete sentences.
A. There is evidence at level of significance 0.05 that the
mean weight gain is different for the two groups.
B. There is not evidence at level of significance 0.05 that
the mean weight gain is different for the two groups.
Transcribed Image Text:Use the critical numbers to determine whether there is evidence (in this first study) that the mean weight gain is different for the two. groups. Explain how you decided, using complete sentences. A. There is evidence at level of significance 0.05 that the mean weight gain is different for the two groups. B. There is not evidence at level of significance 0.05 that the mean weight gain is different for the two groups.
To compare the effects of an oral antibiotic on subjects
suffering from a chronic bacterial infection, we conduct a
matched-pair study, matching subjects who are treated
with the antibiotic to subjects who are treated with bedrest
only. The antibiotic is known to irritate the digestive system.
Our null hypothesis is that there is no difference in weight
gain between the subjects after six months. We will use a
two-tailed test and level of significance 0.05.
Suppose our study involves n =75 matched pairs. We
compute d by subtracting the weight gain for each bedrest
patient from the weight gain for the matched patient
treated with the antibiotic. The average different d = -2517
g with standard deviation s, = 3179 g.
The degrees of freedom is
There are two critical numbers, and t, /2 is
The value of the test statistic is TS =
Transcribed Image Text:To compare the effects of an oral antibiotic on subjects suffering from a chronic bacterial infection, we conduct a matched-pair study, matching subjects who are treated with the antibiotic to subjects who are treated with bedrest only. The antibiotic is known to irritate the digestive system. Our null hypothesis is that there is no difference in weight gain between the subjects after six months. We will use a two-tailed test and level of significance 0.05. Suppose our study involves n =75 matched pairs. We compute d by subtracting the weight gain for each bedrest patient from the weight gain for the matched patient treated with the antibiotic. The average different d = -2517 g with standard deviation s, = 3179 g. The degrees of freedom is There are two critical numbers, and t, /2 is The value of the test statistic is TS =
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