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=19, s1=3, n1=21, x2=23, s2=4, n2=17 a. Left-tailed test, α=0.05 b. 90% confidence interval a. What are the correct hypotheses for a left-tailed 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 E. H0: μ1>μ2 Ha: μ1=μ2 F. 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,__________ (do not reject or reject) H0. 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 pooled t-test and the pooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval. x1=19, s1=3, n1=21, x2=23, s2=4, n2=17 a. Left-tailed test, α=0.05 b. 90% confidence interval a. What are the correct hypotheses for a left-tailed 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 E. H0: μ1>μ2 Ha: μ1=μ2 F. 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,__________ (do not reject or reject) H0. 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
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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=19,
s1=3,
n1=21,
x2=23,
s2=4,
n2=17
a. Left-tailed test, α=0.05
b. 90% confidence interval
a. What are the correct hypotheses for a left-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,__________ (do not reject or reject) H0.
b. The 90% confidence interval is from ____________ to __________.
(Round to three decimal places as needed.)
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