Provided below are summary statistics for independent simple random samples from two populations. Use thepooled t-test and the pooled t-interval procedure to conduct the required hypothesis test and obtain the specifiedconfidence interval.x₁ = 11, S₁ = 2.5, n₁ = 15, x₂ = 14, s₂ = 2.2, n₂ = 15a. Two-tailed test, α = 0.10b. 90% confidence intervalHa: H1 H2Next, compute the test statistic.t= (Round to three decimal places as needed.)Now determine the critical values.±ta/2= ±What is the conclusion of the hypothesis test?Since the test statisticb. The 90% confidence interval is from to(Round to three decimal places as needed.)(Round to three decimal places as needed.)in the rejection region,Ha: H1 = H₂Ho.Time Remaining: 01:35:24Next

The given values are: x¯1=11,s1=2.5,n1=15 and x¯2=14,s2=2.2,n2=15.

Answered: Provided below are summary statistics…

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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Find the 98% confidence interval for the difference between two means based on this information about two samples. Assume independent samples from normal populations. (Use conservative degrees of freedom.) (Give your answers correct to two decimal places.) Sample Number Mean Std. Dev. 1 16 38 29 2 29 28 29 Lower Limit Upper Limit
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=10, s1=2, n1=10, x2=14, s2=6, n2=10 a. Two-tailed test, α=0.05 b. 95% 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 critical values. ±tα/2=±___________ (Round to three decimal places as needed.) What is the conclusion of the hypothesis test? A. Do not reject H0. There is insufficient evidence that the two means are different. B. Reject H0. There is sufficient evidence that the two means are different. C. Reject H0. There is insufficient evidence that the…
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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=11,s1=5,n1=10,x2=15,s2=6,n2=10 a. Two-tailed test,α=0.05 b.95%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.Reject H0.There is sufficient evidence that the two means are different. B. Do not reject H0. There is insufficient evidence that the two means are different. C.Do not reject H0. There is sufficient evidence that the two means are different. D.Reject H0.There is…

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