A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level X for both parts. Treatment Placebo H1 H2 In 31 40 2.35 2.66 0.67 0.95 ... O C. Ho: H1 = H2 H: H1> H2 'D. Ho: H1 =H2 H,: H1 # H2 The test statistic, t, is - 1.61. (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.)

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A study was done using a treatment group and a placebo group. The
results are shown in the table. Assume that the two samples are
independent simple random samples selected from normally distributed
populations, and do not assume that the population standard deviations
are equal. Complete parts (a) and (b) below. Use a 0.05 significance level X
for both parts.
Treatment Placebo
H1
H2
In
31
40
2.35
2.66
0.67
0.95
...
C. Ho: H1 = H2
H1: Hy> H2
'D. Ho:H1 =H2
H,: H1 # H2
The test statistic, t, is - 1.61 . (Round to two decimal places as needed.)
The P-value is
(Round to three decimal places as needed.)
Transcribed Image Text:A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level X for both parts. Treatment Placebo H1 H2 In 31 40 2.35 2.66 0.67 0.95 ... C. Ho: H1 = H2 H1: Hy> H2 'D. Ho:H1 =H2 H,: H1 # H2 The test statistic, t, is - 1.61 . (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.)
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