Question

Condé Nast Traveler conducts an annual survey in which readers rate their favorite cruise ship. All...

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 36 ships that carry fewer than 500 passengers resulted in an average rating of 85.31, and a sample of 43 ships that carry 500 or more passengers provided an average rating of 81.6. Assume that the population standard deviation is 4.56 for ships that carry fewer than 500 passengers and 3.91 for ships that carry 500 or more passengers.

Round your all answers to two decimal places.

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? Use z-table.
to

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Condé Nast Traveler conducts an annual survey in which readers rate their favorite cruise ship. All...
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 36 ships that carry fewer than 500 passengers resulted in an average rating of 85.33, and a sample of 43 ships that carry 500 or more passengers provided an average rating of 81.3. Assume that the population standard deviation is 4.56 for ships that carry fewer than 500...
Condé Nast Traveler conducts an annual survey in which readers rate their favorite cruise ship. All...
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 37 ships that carry fewer than 500 passengers resulted in an average rating of 85.33, and a sample of 43 ships that carry 500 or more passengers provided an average rating of 81.6. Assume that the population standard deviation is 4.59 for ships that carry fewer than 500...
Condé Nast Traveler conducts an annual survey in which readers rate their favorite cruise ship. All...
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 37 ships that carry fewer than 500 passengers resulted in an average rating of 85.36, and a sample of 44 ships that carry 500 or more passengers provided an average rating of 81.40 (Condé Nast Traveler, February 2008). Assume that the population standard deviation is 4.55 for ships...
Condé Nast Traveler conducts an annual survey in which readers rate their favorite cruise ship. All...
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 36 ships that carry fewer than 500 passengers resulted in an average rating of 85.33, and a sample of 44 ships that carry 500 or more passengers provided an average rating of 81.5. Assume that the population standard deviation is 4.53 for ships that carry fewer than 500...
Condé Nast Traveler conducts an annual survey in which readers rate their favorite cruise ship. All...
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 36 ships that carry fewer than 500 passengers resulted in an average rating of 85.38, and a sample of 44 ships that carry 500 or more passengers provided an average rating of 81.7. Assume that the population standard deviation is 4.53 for ships that carry fewer than 500...
Condé Nast Traveler conducts an annual survey in which readers rate their favorite cruise ship. All...
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 36 ships that carry fewer than 500 passengers resulted in an average rating of 85.36, and a sample of 43 ships that carry 500 or more passengers provided an average rating of 81.3. Assume that the population standard deviation is 4.51 for ships that carry fewer than 500...
A magazine conducts an annual survey in which readers rate their favorite cruise ship. All ships...
A magazine 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 34 ships that carry fewer than 500 passengers resulted in an average rating of 85.14, and a sample of 44 ships that carry 500 or more passengers provided an average rating of 81.30. Assume that the population standard deviation is 4.55 for ships that carry fewer than 500 passengers...
magazine conducts an annual survey in which readers rate their favorite cruise ship. All ships are...
magazine conducts an annual survey in which readers rate their favorite cruise ship. All ships are rated on a 100-pointscale, with higher values indicating better service. A sample of 36 ships that carry fewer than 500 passengers resulted in an average rating of 85.15, and a sample of 44 ships that carry 500 or more passengers provided an average rating of 81.10. Assume that the population standard deviation is 4.55 for ships that carry fewer than 500 passengers and 3.97...
A travel magazine conducts an annual survey where readers rate their favorite cruise ship. Ships are...
A travel magazine conducts an annual survey where readers rate their favorite cruise ship. Ships are rated on a 10 point scale, with higher values indicating better service. A sample of 30 ships that carry fewer than 500 passengers resulted in a average rating of 6.73 with standard deviation 0.6. A sample of 25 ships that carry more than 500 passengers resulted in an average rating of 7.09 with standard deviation 0.75. Give a 99.8% confidence interval of the difference...
Cruise ships have been in the news of late due to the concerns that they play...
Cruise ships have been in the news of late due to the concerns that they play in transporting COVID-19 to do different spots around the world. Prior to the outbreak a survey was done to rate the service occurring on cruise ships with the higher they scored on a 100-point scale representing the higher quality of service. The data showed that 27 ships carrying less than 500 passengers provided an average value of 85.36 and a population standard deviation of...