Question

A Bloomberg BusinessWeek subscriber study asked, "In the past 12 months, when traveling for business, what...

A Bloomberg BusinessWeek subscriber study asked, "In the past 12 months, when traveling for business, what type of airline ticket did you purchase most often?" A second question asked if the type of airline ticket purchased most often was for domestic or international travel. Sample data obtained are shown in the following table.

Type of Ticket Domestic International
First Class 27 21
Business Class 92 124
Economy Class 519 137

a. Using a .05 level of significance, is the type of ticket purchased independent of the type of flight? Use Table 12.4.

H 0: - Select your answer

-Type of ticket purchased is independent of the type of flight

Type of ticket purchased is not independent of the type of flightItem 1

H a: - Select your answer

-Type of ticket purchased is independent of the type of flight

Type of ticket purchased is not independent of the type of flightItem 2


Compute the value of the  2 test statistic (to 2 decimals).


The p-value is Selec

tless than .005

between .005 and .01

between .01 and .025

between .025 and .05

between .05 and .10

greater than .10Item 4 .

What is your conclusion?
- Select your answer

-Conclude that the type of ticket purchased depends upon whether the flight is domestic or international.

Conclude that the type of ticket purchased is independent of the type of flight.Item 5

b.

Discuss any dependence that exists between the type of ticket and type of flight.

- Select your answer -

A higher percentage of first class and business class tickets are purchased for international flights compared to domestic flights. Economy class tickets are purchased more for domestic flights.

A higher percentage of economy class tickets are purchased for international flights compared to domestic flights. First class and business class tickets are purchased more for domestic flights. Item 6

Homework Answers

Answer #1

a.      Type of ticket purchased is independent of the type of flight.

   Type of ticket purchased is not independent of the type of flight.

The value of the chi-square test statistic is   .

The p-value is less than 0.005.

I conclude that the type of ticket purchased depends upon whether the flight is domestic or international.

b. A higher percentage of first class and business class tickets are purchased for international flights compared to domestic flights. Economy class tickets are purchased more for domestic flights.

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