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Are the mean number of times a month a person eats out the same for whites, blacks, Hispanics and Asians?

01 / 10 / 2021 Assignment

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Use the following information to answer the next three exercises.Suppose a group is interested in determining whether teenagers obtain their drivers licenses at approximately the same average age across the country. Suppose that the following data are randomly collected from five teenagers in each region of the country. The numbers represent the age at which teenagers obtained their drivers licenses.


Northeast

South

West

Central

East


16.3

16.9

16.4

16.2

17.1


16.1

16.5

16.5

16.6

17.2


16.4

16.4

16.6

16.5

16.6


16.5

16.2

16.1

16.4

16.8

? =

________

________

________

________

________

S2 =

________

________

________

________

________

H0:?1 =?2 =?3 =?4 =?5

H?: At least any two of the group means?1,?2, …,?5 are not equal.

61.degrees of freedom – numerator:df(num) = _________

63.Fstatistic = ________

69.A researcher wants to know if the mean times (in minutes) that people watch their favorite news station are the same.

CNN

FOX

LOCAL

45

15

72

12

43

37

18

68

56

38

50

60

23

31

51

35

22


Suppose thatTable 13.24shows the results of a study.

Assume that all distributions are normal, the four population standard deviations are approximately the same, and the data were collected independently and randomly. Use a level of significance of 0.05.

71.Are the mean number of times a month a person eats out the same for whites, blacks, Hispanics and Asians? Suppose thatTable 13.26shows the results of a study.

WHITE

BLACK

HISPANIC

ASIAN

6

4

7

8

8

1

3

3

2

5

5

5

4

2

4

1

6


6

7

Assume that all distributions are normal, the four population standard deviations are approximately the same, and the data were collected independently and randomly. Use a level of significance of 0.05.



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