Given two independent random samples with the following results:n₂ = 8x₂ = 175$2 = 11n₁ = 12x₁ = = 157$₁ = 32Use this data to find the 95% confidence interval for the true difference between the population means.Assume that the population variances are not equal and that the two populations are normallydistributed.Copy DataStep 1 of 3: Find the critical value that should be used in constructing the confidence interval. Round youranswer to three decimal places.

It is assumed that μ1, μ2 are the population means for 1st and 2nd population respectively.

Answered: Given two independent random samples…

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 random sample of high school students is used to estimate the mean time all high school students study for Algebra II tests. A 99% confidence interval based on this sample is: 1.7 hours to 3.1 hours. What is the sample mean?
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n1=16 x‾1=124 s1=35 n2=12 x‾2=86 s2=31 Use this data to find the 98% confidence interval for the true difference between the population means. Assume that the population variances are not equal and that the two populations are normally distributed. Copy Data Step 2 of 3 : Find the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places. Step 3 of 3 : Please also find the high and low endpoints and round to four decimal points.
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