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Condé Nast Traveler conducts an annual survey in which readers rate their favorite cruise ship. All ships are rated on a 100-point scale, with higher values indicating better service. A sample of ships that carry fewer than 500 passengers and a sample of ships that carry 500 or more passengers is provided in the Microsoft Excel Online file below (Condé Nast Traveler, February 2008). Round your all answers to two decimal places.     What is the point estimate of the difference between the population mean rating for ships that carry fewer than 500 passengers and the population mean rating for ships that carry 500 or more passengers? fill in the blank 2 At 95% confidence, what is the margin of error? fill in the blank 3 What is a 95% confidence interval estimate of the difference between the population mean ratings for the two sizes of ships? fill in the blank 4 to fill in the blank 5

Condé Nast Traveler conducts an annual survey in which readers rate their favorite cruise ship. All ships are rated on a 100-point scale, with higher values indicating better service. A sample of ships that carry fewer than 500 passengers and a sample of ships that carry 500 or more passengers is provided in the Microsoft Excel Online file below (Condé Nast Traveler, February 2008). Round your all answers to two decimal places.     What is the point estimate of the difference between the population mean rating for ships that carry fewer than 500 passengers and the population mean rating for ships that carry 500 or more passengers? fill in the blank 2 At 95% confidence, what is the margin of error? fill in the blank 3 What is a 95% confidence interval estimate of the difference between the population mean ratings for the two sizes of ships? fill in the blank 4 to fill in the blank 5

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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Condé Nast Traveler conducts an annual survey in which readers rate their favorite cruise ship. All ships are rated on a 100-point scale, with higher values indicating better service. A sample of ships that carry fewer than 500 passengers and a sample of ships that carry 500 or more passengers is provided in the Microsoft Excel Online file below (Condé Nast Traveler, February 2008).

Round your all answers to two decimal places.

 

 

  1. What is the point estimate of the difference between the population mean rating for ships that carry fewer than 500 passengers and the population mean rating for ships that carry 500 or more passengers?

    fill in the blank 2

  2. At 95% confidence, what is the margin of error?

    fill in the blank 3

  3. What is a 95% confidence interval estimate of the difference between the population mean ratings for the two sizes of ships?

    fill in the blank 4 to fill in the blank 5

Dv V E4 1 2 3456789PINNEFOON~~~~ 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 File 26 Home 84.11 87.48 83.06 91.3 72.96 77.41 85.78 80.77 A B Smaller Ships Larger Ships 94.7 81.3 89.3 85.45 86.53 80.84 88.14 86.5 83.37 89.38 75.57 76.55 Insert 75.33 85.61 90.97 89.18 88.05 93.81 Arial X ✓ fx C с 83.74 76.82 76.63 Draw Page Layout 85.67 83.52 Sample 1 Size 88.79 Sample 2 Size 80.2 82.81 81.2 82.33 74.93 78.63 74.91 83.08 10 Sample 1 Mean 80.93 Sample 2 Mean 74.96 Point Estimate for Mean Difference (2 decimals) 91.72 79.2 82.73 81.63 89.23 77.82 90.8 85.14 Population 1 Standard Deviation Population 2 Standard Deviation D Interval Estimation for the Difference Between Two Population Means, Sigma Known Case Population 1 Variance Population 2 Variance Standard Error B Formulas z-critical (2 decimals) Margin of error (2 decimals) C.I. Lower Limit (2 decimals) C.I. Upper Limit (2 decimals) DO ✓ Data Review View Help E 5.641569 5.065637 F ab G Formulas #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A General H I < ←0 .00 J .00 →.0 K L M Editing ✓ Σ ✓ ✓ N O Dr P Comments Q > > ▲
Transcribed Image Text:Dv V E4 1 2 3456789PINNEFOON~~~~ 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 File 26 Home 84.11 87.48 83.06 91.3 72.96 77.41 85.78 80.77 A B Smaller Ships Larger Ships 94.7 81.3 89.3 85.45 86.53 80.84 88.14 86.5 83.37 89.38 75.57 76.55 Insert 75.33 85.61 90.97 89.18 88.05 93.81 Arial X ✓ fx C с 83.74 76.82 76.63 Draw Page Layout 85.67 83.52 Sample 1 Size 88.79 Sample 2 Size 80.2 82.81 81.2 82.33 74.93 78.63 74.91 83.08 10 Sample 1 Mean 80.93 Sample 2 Mean 74.96 Point Estimate for Mean Difference (2 decimals) 91.72 79.2 82.73 81.63 89.23 77.82 90.8 85.14 Population 1 Standard Deviation Population 2 Standard Deviation D Interval Estimation for the Difference Between Two Population Means, Sigma Known Case Population 1 Variance Population 2 Variance Standard Error B Formulas z-critical (2 decimals) Margin of error (2 decimals) C.I. Lower Limit (2 decimals) C.I. Upper Limit (2 decimals) DO ✓ Data Review View Help E 5.641569 5.065637 F ab G Formulas #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A General H I < ←0 .00 J .00 →.0 K L M Editing ✓ Σ ✓ ✓ N O Dr P Comments Q > > ▲
Condé Nast Traveler conducts an annual survey in which readers rate their favorite cruise ship. All ships are rated on a 100-point scale, with higher values indicating better service. A sample of ships that carry fewer than 500 passengers and a sample of ships that carry 500 or more passengers is provided in the Microsoft Excel Online file below (Condé Nast Traveler, February 2008). Round your all answers to two decimal places. Open spreadsheet a. What is the point estimate of the difference between the population mean rating for ships that carry fewer than 500 passengers and the population mean rating for ships that carry 500 or more passengers? b. At 95% confidence, what is the margin of error? c. What is a 95% confidence interval estimate of the difference between the population mean ratings for the two sizes of ships? to
Transcribed Image Text:Condé Nast Traveler conducts an annual survey in which readers rate their favorite cruise ship. All ships are rated on a 100-point scale, with higher values indicating better service. A sample of ships that carry fewer than 500 passengers and a sample of ships that carry 500 or more passengers is provided in the Microsoft Excel Online file below (Condé Nast Traveler, February 2008). Round your all answers to two decimal places. Open spreadsheet a. What is the point estimate of the difference between the population mean rating for ships that carry fewer than 500 passengers and the population mean rating for ships that carry 500 or more passengers? b. At 95% confidence, what is the margin of error? c. What is a 95% confidence interval estimate of the difference between the population mean ratings for the two sizes of ships? to
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