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following results are for independent random samples taken from two populations. Sample 1 Sample 2 n = 20 n2 = 30 X1 = 22.6 X2 = 20.1 $1 = 2.2 S2 = 4.6 What is the point estimate of the difference between the two population means? (Use x, ......... ........ Enter a number. What is the degrees of freedom for the t distribution? (Round your answer down to the nearest integer.) At 95% confidence, what is the margin of error? (Round your answer to one decimal place.) What is the 95% confidence interval for the difference between the two population means? (Use x, - x,. Round your answers to one decimal place.) to

following results are for independent random samples taken from two populations. Sample 1 Sample 2 n = 20 n2 = 30 X1 = 22.6 X2 = 20.1 $1 = 2.2 S2 = 4.6 What is the point estimate of the difference between the two population means? (Use x, ......... ........ Enter a number. What is the degrees of freedom for the t distribution? (Round your answer down to the nearest integer.) At 95% confidence, what is the margin of error? (Round your answer to one decimal place.) What is the 95% confidence interval for the difference between the two population means? (Use x, - x,. Round your answers to one decimal place.) to

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 22PFA
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The following results are for independent random samples taken from two populations. Sample 1 Sample 2 = 20 n2 = 30 X, = 22.6 X2 = 20.1 S, = 2.2 S2 = 4.6 (a) What is the point estimate of the difference between the two population means? (Use x, - x,.) 1 Enter a number. (b) What is the degrees of freedom for the t distribution? (Round your answer down to the nearest integer.) (c) At 95% confidence, what is the margin of error? (Round your answer to one decimal place.) (d) What is the 95% confidence interval for the difference between the two population means? (Use x, – x,. Round your answers to one decimal place.) to
Transcribed Image Text:The following results are for independent random samples taken from two populations. Sample 1 Sample 2 = 20 n2 = 30 X, = 22.6 X2 = 20.1 S, = 2.2 S2 = 4.6 (a) What is the point estimate of the difference between the two population means? (Use x, - x,.) 1 Enter a number. (b) What is the degrees of freedom for the t distribution? (Round your answer down to the nearest integer.) (c) At 95% confidence, what is the margin of error? (Round your answer to one decimal place.) (d) What is the 95% confidence interval for the difference between the two population means? (Use x, – x,. Round your answers to one decimal place.) to
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