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The following results are for independent random samples taken from two populations. Sample 1 n₁ = 20 x₁ = 22.9 Sample 2 n₂ = 30 x₂ = 20.1 S₁ = 2.5 (a) What is the point estimate of the difference between the two population means? (Use x₁ - x₂) 2.8 ✓ $₂ = 4.8 (b) What is the degrees of freedom for the t distribution? (Round your answer down to the nearest integer.) 45 (c) At 95% confidence, what is the margin of error? (Round your answer to one decimal place.) 2.093602103 (d) What is the 95% confidence interval for the difference between the two population means? (Use x, X2 Round your answers to one decimal place.) to

The following results are for independent random samples taken from two populations. Sample 1 n₁ = 20 x₁ = 22.9 Sample 2 n₂ = 30 x₂ = 20.1 S₁ = 2.5 (a) What is the point estimate of the difference between the two population means? (Use x₁ - x₂) 2.8 ✓ $₂ = 4.8 (b) What is the degrees of freedom for the t distribution? (Round your answer down to the nearest integer.) 45 (c) At 95% confidence, what is the margin of error? (Round your answer to one decimal place.) 2.093602103 (d) What is the 95% confidence interval for the difference between the two population means? (Use x, X2 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
Section: Chapter Questions
Problem 22SGR
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esc The following results are for independent random samples taken from two populations. Sample 1 7₁ = = 20 f1 X1 66°F Mostly sunny = 22.9 $1 = 2.5 (a) What is the point estimate of the difference between the two population means? (Use x₁ - x₂.) 2.8 2 Sample 2 72 = 30 (b) What is the degrees of freedom for the t distribution? (Round your answer down to the nearest integer.) 45 Need Help? X₂ (c) At 95% confidence, what is the margin of error? (Round your answer to one decimal place.) 2.093602103 f2 (d) What is the 95% confidence interval for the difference between the two population means? (Use x. = 20.1 S₂ = 4.8 52 to Read It f3 Watch It f4 Master It f5 f6 4- f7 4+ fg KAA fg hp All Round your answers to one decimal place.) f10 DNI U f11 W f12. P
Transcribed Image Text:esc The following results are for independent random samples taken from two populations. Sample 1 7₁ = = 20 f1 X1 66°F Mostly sunny = 22.9 $1 = 2.5 (a) What is the point estimate of the difference between the two population means? (Use x₁ - x₂.) 2.8 2 Sample 2 72 = 30 (b) What is the degrees of freedom for the t distribution? (Round your answer down to the nearest integer.) 45 Need Help? X₂ (c) At 95% confidence, what is the margin of error? (Round your answer to one decimal place.) 2.093602103 f2 (d) What is the 95% confidence interval for the difference between the two population means? (Use x. = 20.1 S₂ = 4.8 52 to Read It f3 Watch It f4 Master It f5 f6 4- f7 4+ fg KAA fg hp All Round your answers to one decimal place.) f10 DNI U f11 W f12. P
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