Question

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 Flight
Type of Ticket	Domestic	International
First Class	22	26
Business Class	125	94
Economy Class	131	513

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 flight

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 flight

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


The p-value is Select : less than .005, between .005 and .01, between .01 and .025, between .025 and .05, between .05 and .10, greater than .10

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.

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

- Select your answer - (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), (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)

Answer 1

Tabulated Statistics: Type of Ticket, Worksheet columns

Rows: Type of Ticket   Columns: Worksheet columns

	Domestic	International	All
First Class	22	26	48
	14.65	33.35
Business Class	125	94	219
	66.83	152.17
Economy Class	131	513	644
	196.52	447.48
All	278	633	911

Cell Contents
      Count
      Expected count

Chi-Square Test

	Chi-Square	DF	P-Value
Pearson	109.62	2	0.000

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P-value = less than .005

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b)  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