32 37 and a placebo group. The reus are shown in the teble Asume thet he hwo sample are independent aimple rendom samplen solected from normally distributed A de net ume het he population atandard deviations are equal Complete parts (n) and (b) below. Use 0.01 signiioanoe level for both parts 2.33 2.64 populations, and do not 0.07 0.54 a Teat the claim that the hwo aamplee are from populations with the same mean. What are the nl and allemative hypotheses? OB. Ho: H2 OA H: P

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Astudy was done uning a treatment group and a plecebo group. The results are shown in the table, Assume that the hwo samples are independent simple random samples selected from normally distributed
populations, and do not assume thet the population standard deviations are equal. Complete parts (n) and (b) below. Use a 0.01 significance level for both parts.
37
2.64
0.64
32
2.33
0.97
a Tost the claim that the hwo samplee are from populations with the aame mean.
What are the null and altemative hypotheses?
OA H: <2
O B. Ho: H2
O D. Ho: H µ2
OC. H: H "y
H: H 2
The tost statistic, t, is (Round to two decimal places as needed.)
The P-value is 7 (Round to three decimal places as needed.)
State the conalusion for the tost.
DA. Fail to roject the null hypothesis. There is not sufficiont evidence to warrant rejection of the claim that the two samples are from populations with the same mean.
B. Reject the null hypothesis. There is sufficient evidence to warrant rejection of the claim that the two samples are from populations with the same mean.
C. Fail to reject the null hypothesis. There is sufficient evidence to warant rejection of the claim that the two samples are from populations with the same mean.
. Reject the null hypothesis. There is not sufficient evidence
warrant rejection of the claim that the two samples are from populations with the same mean.
Transcribed Image Text:Astudy was done uning a treatment group and a plecebo group. The results are shown in the table, Assume that the hwo samples are independent simple random samples selected from normally distributed populations, and do not assume thet the population standard deviations are equal. Complete parts (n) and (b) below. Use a 0.01 significance level for both parts. 37 2.64 0.64 32 2.33 0.97 a Tost the claim that the hwo samplee are from populations with the aame mean. What are the null and altemative hypotheses? OA H: <2 O B. Ho: H2 O D. Ho: H µ2 OC. H: H "y H: H 2 The tost statistic, t, is (Round to two decimal places as needed.) The P-value is 7 (Round to three decimal places as needed.) State the conalusion for the tost. DA. Fail to roject the null hypothesis. There is not sufficiont evidence to warrant rejection of the claim that the two samples are from populations with the same mean. B. Reject the null hypothesis. There is sufficient evidence to warrant rejection of the claim that the two samples are from populations with the same mean. C. Fail to reject the null hypothesis. There is sufficient evidence to warant rejection of the claim that the two samples are from populations with the same mean. . Reject the null hypothesis. There is not sufficient evidence warrant rejection of the claim that the two samples are from populations with the same mean.
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