Provided below are summary statistics for independent simple random samples from two populations. Use the pooled t-test and the pooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval. x1=20, s1=4, n1=12, x2=18, s2=5, n2=13 a. Right-tailed test, α=0.05 b. 90% confidence interval a. What are the correct hypotheses for a right-tailed test? A. H0: μ1=μ2 Ha: μ1≠μ2 B. H0: μ1<μ2 Ha: μ1=μ2
Provided below are summary statistics for independent simple random samples from two populations. Use the pooled t-test and the pooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval. x1=20, s1=4, n1=12, x2=18, s2=5, n2=13 a. Right-tailed test, α=0.05 b. 90% confidence interval a. What are the correct hypotheses for a right-tailed test? A. H0: μ1=μ2 Ha: μ1≠μ2 B. H0: μ1<μ2 Ha: μ1=μ2
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Provided below are summary statistics for independent simple random samples from two populations. Use the pooled t-test and the pooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval.
x1=20,
s1=4,
n1=12,
x2=18,
s2=5,
n2=13
a. Right-tailed test, α=0.05
b. 90% confidence interval
a. What are the correct hypotheses for a right-tailed test?
A. H0: μ1=μ2 Ha: μ1≠μ2
Compute the test statistic.
t=______________
(Round to three decimal places as needed.)Determine the critical value.
tα=____________
(Round to three decimal places as needed.)What is the conclusion of the hypothesis test?
Since the test statistic___________(is or is not) in the rejection region,
__________ (reject or do not reject) H0.
b. The 90% confidence interval is from _______ to ________.
(Round to three decimal places as needed.)
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