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=4, n1=21, x2=22, s2=3, n2=13 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=-2.324 (round to three decimal places as needed) Determine the critical value −tα=______________ (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=4, n1=21, x2=22, s2=3, n2=13 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=-2.324 (round to three decimal places as needed) Determine the critical value −tα=______________ (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=4,
n1=21,
x2=22,
s2=3,
n2=13
a. Left-tailed test, α=0.05
b. 90% confidence interval
a. What are the correct hypotheses for a left-tailed test?
Ha: μ1>μ2
Ha: μ1=μ2
Ha: μ1=μ2
Ha: μ1≠μ2
Ha: μ1=μ2
Ha: μ1< μ2
Compute the test statistic.
t=-2.324 (round to three decimal places as needed)
Determine the critical value
−tα=______________
(Round to three decimal places as needed.)Expert Solution
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