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
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Topic Video
Question
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
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
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps
