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  3. the following table was presented in an article su

The following table was presented in an article summarizing a study to compare a new drug to...

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Statistics

The following tablewas presented in an article summarizing a study to compare a newdrug to a standard drug and to a placebo.

Characteristic*

New Drug

Standard Drug

Placebo

p

Age, years

45.2 (4.8)

44.9 (5.1)

42.8 (4.3)

0.5746

% Female

51%

55%

57%

0.1635

Annual Income,$000s

59.5 (14.3)

63.8 (16.9)

58.2 (13.6)

0.4635

% with Insurance

87%

65%

82%

0.0352

Disease Stage

0.0261

Stage I

35%

18%

33%

Stage II

42%

37%

47%

Stage III

23%

51%

20%

*Table entries andMean (SD) or %

  1. Are there any statistically significant differences in thecharacteristics shown among the

treatments?   Justify your answer.

  1. Consider the test for differences in age among treatments.Write the hypotheses and the formula of the test statistic used (Nocomputations required – formula only).
  1. Consider the test for differences in insurance coverage amongtreatments. Write the hypotheses and the formula of the teststatistic used (No computations required – formula only).
  1. Consider the test for differences in disease stage amongtreatments. Write the hypotheses and the formula of the teststatistic used (No computations required – formula only).

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