In: Statistics and Probability

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 81.4. Assume that the population standard deviation is 4.55 for ships that carry fewer than 500 passengers and 3.97 for ships that carry 500 or more passengers. Round your all answers to two decimal places.

*Please show using excel*

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?

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 81.9. Assume that the
population standard deviation is 4.59 for ships that carry fewer
than...

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.
Smaller Ships
Larger Ships
93.9
81.4
84.11
85.67...

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 44ships that carry 500
or more passengers provided an average rating of 81.4 . Assume that
the population standard deviation is for 4.52 ships that
carry fewer than 500 passengers...

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. Assume that
the population standard deviation is 4.55 for ships that carry
fewer than 500...

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. Assume that
the population standard deviation is 4.55 for ships that carry
fewer than 500...

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. Assume that
the population standard deviation is 4.55 for ships that carry
fewer than 500...

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).
Smaller Ships
94.8
84.11
87.48
83.06
92.1
72.96
77.41
85.78
80.77
89.7
85.45
86.53
80.84
88.14...

The Condé Nast Traveler Gold List for 2012 provided ratings for
the top 20 small cruise ships (Condé Nast Traveler website, March
1, 2012). The data shown below are the scores each ship received
based upon the results from Condé Nast Traveler's annual Readers'
Choice Survey. Each score represents the percentage of respondents
who rated a ship as excellent or very good on several criteria,
including Itineraries/Schedule, Shore Excursions, and Food/Dining.
An overall score was also reported and used to...

The Condé Nast Traveler Gold List provides
ratings for the top 20 small cruise ships. The data shown below are
the scores each ship received based upon the results from
Condé Nast Traveler's Annual Readers' Choice
Survey. Each score represents the percentage of respondents who
rated a ship as excellent or very good on several criteria,
including Shore Excursions and Food/Dining. An overall score was
also reported and used to rank the ships. The highest ranked ship,
the Seabourn Odyssey,...

Condé Nast Traveler publishes a Gold List of the top hotels
all over the world. The Broadmoor Hotel in Colorado Springs
contains 700 rooms and is on the 2004 Gold List. Suppose
Broadmoor’s marketing group forecasts a mean demand of 670 rooms
for the coming weekend. Assume that demand for the upcoming weekend
is normally distributed with a standard deviation of 30.
a. What is the probability all the hotel rooms will be
rented?

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