Identify test statistic 2. Identify p-value 3. use technology to construct the confidence interval

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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1. Identify test statistic

2. Identify p-value

3. use technology to construct the confidence interval

Treatment Placebo
H1
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 0.01 significance level for both parts.
In
25
40
2.35
2.63
0.94
0.65
a. Test the claim that the two samples are from populations with the same mean.
What are the null and alternative hypotheses?
O A. Ho: H1 H2
O B. Ho: H1 <H2
H4: H12 H2
O C. Ho: H1=#2
OD. Ho: H1 = H2
H4: Hq > H2
The test statistic, t, is |. (Round to two decimal places as needed.)
He el x
Transcribed Image Text:Treatment Placebo H1 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 0.01 significance level for both parts. In 25 40 2.35 2.63 0.94 0.65 a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? O A. Ho: H1 H2 O B. Ho: H1 <H2 H4: H12 H2 O C. Ho: H1=#2 OD. Ho: H1 = H2 H4: Hq > H2 The test statistic, t, is |. (Round to two decimal places as needed.) He el x
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