1. Listed below are amounts of arsenic in samples of brown rice from three different states. The amount are in micrograms of arsenic and all samples have the same serving size. The data are from the Food and Drug Administration. Use a 1% significance level to test the claim that the three samples are from populations with the same median.

 

Arkansas

 

California

 

Texas

 

4.8

 

1.5

 

5.6

 

4.9

 

3.7

 

5.8

 

5.0

 

4.0

 

6.6

 

5.4

 

4.5

 

6.9

 

5.4

 

4.9

 

6.9

 

5.4

 

5.1

 

6.9

 

5.6

 

5.3

 

7.1

 

5.6

 

5.4

 

7.3

 

5.6

 

5.4

 

7.5

 

5.9

 

5.5

 

7.6

 

6.0

 

5.6

 

7.7

 

6.1

 

5.6

 

7.7

 

(Triola, 2018)

 

2. Listed below are attribute ratings of males by females who participated in speed dating events. Use a 5% significance level to test the claim that females from the different age brackets give attribute ratings with the same median.

 

Age 20-22

 

Age 23-26

 

Age 27-29

 

38.0

 

39.0

 

36.0

 

42.0

 

31.0

 

42.0

 

30.0

 

36.0

 

35.5

 

39.0

 

35.0

 

27.0

 

47.0

 

41.0

 

37.0

 

43.0

 

45.0

 

34.0

 

33.0

 

36.0

 

22.0

 

31.0

 

23.0

 

47.0

 

32.0

 

36.0

 

36.0

 

28.0

 

20.0

 

32.0

 

(Triola, 2018)

 

 

 

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