Provided below are summary statistics for independent simple random samples from two populations. Use the nonpooled t-test and the nonpooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval. x1=20, s1=5,n1=15,x2=29,s2=8,n2=25 a. Left-tailed test, α=0.05 b.90%confidence interval A. What are the hypotheses for the t-test? A.H0:μ1=μ2 Ha:μ1>μ2 B. H0:μ1≤μ2 Ha:μ1>μ2 C. H0:μ1=μ2 Ha:μ1≠μ2 D. H0:μ1=μ2 Ha:μ1<μ2 Find the test statistic. t= (Round to three decimal places as needed.) Find the P-value. P= (Round to four decimal places as needed.) What is the conclusion of the hypothesis test? A. Do not reject H0. There is sufficient evidence that μ1 is less than μ2. B. Reject H0.There is insufficient evidence that μ1 is less than μ2. C.Reject H0.There is sufficient evidence that μ1 is less than μ2. D.Do not reject H0.There is insufficient evidence that μ1 is less than μ2. b. The 90% confidence interval is from____ to_____ (Round to three decimal places as needed.)
Provided below are summary statistics for independent simple random samples from two populations. Use the nonpooled t-test and the nonpooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval. x1=20, s1=5,n1=15,x2=29,s2=8,n2=25 a. Left-tailed test, α=0.05 b.90%confidence interval A. What are the hypotheses for the t-test? A.H0:μ1=μ2 Ha:μ1>μ2 B. H0:μ1≤μ2 Ha:μ1>μ2 C. H0:μ1=μ2 Ha:μ1≠μ2 D. H0:μ1=μ2 Ha:μ1<μ2 Find the test statistic. t= (Round to three decimal places as needed.) Find the P-value. P= (Round to four decimal places as needed.) What is the conclusion of the hypothesis test? A. Do not reject H0. There is sufficient evidence that μ1 is less than μ2. B. Reject H0.There is insufficient evidence that μ1 is less than μ2. C.Reject H0.There is sufficient evidence that μ1 is less than μ2. D.Do not reject H0.There is insufficient evidence that μ1 is less than μ2. b. The 90% confidence interval is from____ to_____ (Round to three decimal places as needed.)
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
Question
Provided below are summary statistics for independent simple random samples from two populations. Use the nonpooled t-test and the nonpooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval.
x1=20, s1=5,n1=15,x2=29,s2=8,n2=25
a. Left-tailed test, α=0.05 b.90%confidence interval
A. What are the hypotheses for the t-test?
A.H0:μ1=μ2
Ha:μ1>μ2
B.
H0:μ1≤μ2
Ha:μ1>μ2
C.
H0:μ1=μ2
Ha:μ1≠μ2
D.
H0:μ1=μ2
Ha:μ1<μ2
Find the test statistic.
t=
(Round to three decimal places as needed.)
Find the P-value.
P=
(Round to four decimal places as needed.)
What is the conclusion of the hypothesis test?
A.
Do not reject H0. There is sufficient evidence that
μ1 is less than μ2.
C.Reject H0.There is sufficient evidence that μ1 is less than μ2.
D.Do not reject H0.There is insufficient evidence that μ1
is less than μ2.
b. The 90% confidence interval is from____ to_____
(Round to three decimal places as needed.)
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 3 steps with 3 images
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman