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Treatrment PI A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two sarmples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Use a 0.01 significance level to test the claim that the two samples are from populations with the same mean as follows. n 25 2.36 S 0.95 Using 1 less than the smaller sample size as an estimate of the degrees of freedom, find the upper critical value from the t-table. (Round to three decimal places as needed.) The test statistic, t, is. (Round to three decimal places as needed.) State the conclusion for the test. O A. Fail to reject the null hypothesis. There is sufficient evidence to warrant rejection of the claim that the two samples are from populations with the same

Treatrment PI A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two sarmples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Use a 0.01 significance level to test the claim that the two samples are from populations with the same mean as follows. n 25 2.36 S 0.95 Using 1 less than the smaller sample size as an estimate of the degrees of freedom, find the upper critical value from the t-table. (Round to three decimal places as needed.) The test statistic, t, is. (Round to three decimal places as needed.) State the conclusion for the test. O A. Fail to reject the null hypothesis. There is sufficient evidence to warrant rejection of the claim that the two samples are from populations with the same

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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Treatment Placebo 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. Use a 0.01 significance level to test the claim that the two samples are from populations with the same mean as follows. P1 P2 In 25 37 2.36 2.69 0.95 0.63 Using 1 less than the smaller sample size as an estimate of the degrees of freedom, find the upper critical value from the t-table. (Round to three decimal places as needed.) The test statistic, t, is (Round to three decimal places as needed.) State the conclusion for the test. O A. Fail to 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. O B. Fail to reject the null hypothesis. There is not sufficient evidence to warrant rejection of the claim that the two samples are from populations with the same mean. O C. 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. O D. Reiect the null hvnothesis There is not sufficient evidence to warrant reiection of the claim that the two samples are from nonulations with the same mean Click to select your answer(s) and then click Check Answer. Clear All Check Answer All parts showing
Transcribed Image Text:Treatment Placebo 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. Use a 0.01 significance level to test the claim that the two samples are from populations with the same mean as follows. P1 P2 In 25 37 2.36 2.69 0.95 0.63 Using 1 less than the smaller sample size as an estimate of the degrees of freedom, find the upper critical value from the t-table. (Round to three decimal places as needed.) The test statistic, t, is (Round to three decimal places as needed.) State the conclusion for the test. O A. Fail to 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. O B. Fail to reject the null hypothesis. There is not sufficient evidence to warrant rejection of the claim that the two samples are from populations with the same mean. O C. 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. O D. Reiect the null hvnothesis There is not sufficient evidence to warrant reiection of the claim that the two samples are from nonulations with the same mean Click to select your answer(s) and then click Check Answer. Clear All Check Answer All parts showing
Treatrment Placebo A study was done using a treatment group and a placebo group. The results are shown in the table. Assurne 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. Use a 0.01 significance level to test the claim that the two samples are from populations with the same mean as P1 H2 25 37 follows. 2.36 2.69 S 0.95 0.63 What are the null and alternative hypotheses? O A. Ho: H1= #2 O B. Ho: H1 H2 H1: H1> H2 H1: 41< H2 O C. Ho: H1= H2 O D. Ho: H1<H2 H1: H1#H2 H1: H12#2 Advai Using 1 less than the smaller sample size as an estimate of the degrees of freedom, find the lower critical value from the t-table. (Round to three decimal places as needed.) About Using 1 less than the smaller sample size as an estimate of the degrees of freedom, find the upper critical value from the t-table. Click to select your answer(s) and then click Check Answer. Clear All Check Answer All parts showing 司
Transcribed Image Text:Treatrment Placebo A study was done using a treatment group and a placebo group. The results are shown in the table. Assurne 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. Use a 0.01 significance level to test the claim that the two samples are from populations with the same mean as P1 H2 25 37 follows. 2.36 2.69 S 0.95 0.63 What are the null and alternative hypotheses? O A. Ho: H1= #2 O B. Ho: H1 H2 H1: H1> H2 H1: 41< H2 O C. Ho: H1= H2 O D. Ho: H1<H2 H1: H1#H2 H1: H12#2 Advai Using 1 less than the smaller sample size as an estimate of the degrees of freedom, find the lower critical value from the t-table. (Round to three decimal places as needed.) About Using 1 less than the smaller sample size as an estimate of the degrees of freedom, find the upper critical value from the t-table. Click to select your answer(s) and then click Check Answer. Clear All Check Answer All parts showing 司
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