Comparing weight-loss treatments. Twenty overweight females have agreed to parti

Question

Comparing weight-loss treatments. Twenty overweight females have agreed to participate in a study of the effectiveness of 4 weight-loss treatments: A, B, C and D. The researcher first calculates how overweight each subject is by comparing the subject's actual weight with her "ideal" weight. The subjects and their excess weights in pounds are

Alexander     21     Franken     25     Murray     34     Schumer     42

Barrasso      34      Hatch        33     Nelson     28     Spector      33

Bayh           30       Kerry        28     Pryor       30      Tester       35

Collins         25      Leahy        32     Reed      30       Webb       29

Dodd           24      McCain      39     Sander   27        Wyden    35

The response variable is the weight lost after 8 weeks of treatment. Because a subject's excess weight will influence the response, a block design is appropriate,

(a) Arrange the subjects in order of increasing excess weight. Form 5 blocks of 4 subjects each by grouping the 4 least overwieght, then the next 4, and so on.

(b) Use Table A (or a statistical software) to randomly assign the 4 subjects in each block to the 4 weight-loss treatments. Be sure to explain exactly how you used the table.

Comparing weight-loss treatments. Twenty overweight females have agreed to participate in a study of the effectiveness of 4 weight-loss treatments: A, B, C and D. The researcher first calculates how overweight each subject is by comparing the subject's actual weight with her "ideal" weight. The subjects and their excess weights in pounds are The response variable is the weight lost after 8 weeks of treatment. Because a subject's excess weight will influence the response, a block design is appropriate, Arrange the subjects in order of increasing excess weight. Form 5 blocks of 4 subjects each by grouping the 4 least overwieght, then the next 4, and so on. Use Table A (or a statistical software) to randomly assign the 4 subjects in each block to the 4 weight-loss treatments. Be sure to explain exactly how you used the table.

Explanation / Answer

(a)

(b) I am not working random number , so I can not solve this.

Alexander 21 Sanders 27 Bayh 30 Hatch 33 Tester 35 Dodd 24 Nelson 28 Pryor 30 Specter 33 Wyden 35 Collins 25 Kerry 28 Reed 30 Barrasso 34 McCain 39 Franken 25 Webb 29 Leahy 32 Murray 34 Schumer 42

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