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Runners in the 2007 Shamrock Marathon were surveyed about their experiences duri

ID: 3224390 • Letter: R

Question

Runners in the 2007 Shamrock Marathon were surveyed about their experiences during the event. The researchers were interested in examining the association between the gender of the runner (male/female) and the event completed (marathon, ½ marathon, 8K). The data are presented in the following contingency table.

Gender * Shamrock Event Crosstabulation

Which race did you run this year?

Total

Marathon

Half Marathon

8K

What is your gender?

Male

Count

546

724

339

1609

Expected Count

395.2

802.1

411.7

1609.0

% within What is your gender?

33.9%

45.0%

21.1%

100.0%

% within Which race did you run this year?

61.4%

40.1%

36.6%

44.5%

% of Total

15.1%

20.0%

9.4%

44.5%

Female

Count

343

1080

587

2010

Expected Count

493.8

1001.9

514.3

2010.0

% within What is your gender?

17.1%

53.7%

29.2%

100.0%

% within Which race did you run this year?

38.6%

59.9%

63.4%

55.5%

% of Total

9.5%

29.8%

16.2%

55.5%

Total

Count

889

1804

926

3619

Expected Count

889.0

1804.0

926.0

3619.0

% within What is your gender?

24.6%

49.8%

25.6%

100.0%

% within Which race did you run this year?

100.0%

100.0%

100.0%

100.0%

% of Total

24.6%

49.8%

25.6%

100.0%

#1) What is the appropriate statistical procedure to test H0:Pmales=PFemales in race run at the 2007 Shamrock Marathon Event?

            a.         dependent t-test

            b.         2 test of independence

            c.         oneway ANOVA

            d.         repeated measures ANOVA

            e.         Pearson product moment correlation coefficient

#2) What is the critical statistical value to test H0:Pmales=PFemales in participation in the three Shamrock Marathon events in 2007 at =0.05?

            a.         3.84

            b.         5.99

            c.         11.87

            d.         12.59

            e.         15.51      

#3) What is the calculated statistical value to test H0:PMales=PFemales in participation in the three Shamrock Marathon events in 2007?

            a.         2.71

            b.         56.21

            c.         110.55

            d.         140.32

            e.         288.79

#4) Select the correct conclusion.

            a.         The proportion of females participating in the marathon (38.6%) is significantly less than     the proportion of males participating in the marathon (61.4%)

            b.         Over half of the registered females participated in the half-marathon with females     representing 59.9% of half-marathon participants.

            c.         There is no difference between males and females in percent participation in the race            events.

            d.         A and B are both correct.

            e.         B and C are both correct.

Gender * Shamrock Event Crosstabulation

Which race did you run this year?

Total

Marathon

Half Marathon

8K

What is your gender?

Male

Count

546

724

339

1609

Expected Count

395.2

802.1

411.7

1609.0

% within What is your gender?

33.9%

45.0%

21.1%

100.0%

% within Which race did you run this year?

61.4%

40.1%

36.6%

44.5%

% of Total

15.1%

20.0%

9.4%

44.5%

Female

Count

343

1080

587

2010

Expected Count

493.8

1001.9

514.3

2010.0

% within What is your gender?

17.1%

53.7%

29.2%

100.0%

% within Which race did you run this year?

38.6%

59.9%

63.4%

55.5%

% of Total

9.5%

29.8%

16.2%

55.5%

Total

Count

889

1804

926

3619

Expected Count

889.0

1804.0

926.0

3619.0

% within What is your gender?

24.6%

49.8%

25.6%

100.0%

% within Which race did you run this year?

100.0%

100.0%

100.0%

100.0%

% of Total

24.6%

49.8%

25.6%

100.0%

Explanation / Answer

1) What is the appropriate statistical procedure to test H0:Pmales=PFemales in race run at the 2007 Shamrock Marathon Event?

Answer : 2 test of independence

2) What is the critical statistical value to test H0:Pmales=PFemales in participation in the three Shamrock Marathon events in 2007 at =0.05?

Degrees o freedom = (r-1)*(c-1) = 2

Answer : 5.99

3) What is the calculated statistical value to test H0:PMales=PFemales in participation in the three Shamrock Marathon events in 2007?

Summing above value we get the test statistic value.

Answer :140.32

4) Select the correct conclusion.

Answer : There is no difference between males and females in percent participation in the race events.

Calculation: Male 57.4989 7.5962 12.8370 Obtained by using chi-sq formula : (Oi-Ei)^2/Ei Female 46.0277 6.0807 10.2760