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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 = 23, S₂ = 3, n₂ = 16 a. Left-tailed test, α = 0.05 b. 90% confidence interval

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 = 23, S₂ = 3, n₂ = 16 a. Left-tailed test, α = 0.05 b. 90% confidence interval

MATLAB: An Introduction with Applications
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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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​ P-value.
 
P=
​(Round to four decimal places as​ needed.)
 
Since the​ P-value is
▼
 
greater
equal to or less
than
α​,
▼
 
do not reject
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 = 4, n₁ = 21, x₂ = 23, S₂ = 3, n₂ = 16 a. Left-tailed test, α = 0.05 b. 90% confidence interval
Transcribed Image Text: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 = 23, S₂ = 3, n₂ = 16 a. Left-tailed test, α = 0.05 b. 90% confidence interval
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