Consider the test for differences in age among the new drug compared to the placebo (two variables). Write the hypotheses and the formula of the test statistic used (No computations required – formula only). c) Consider the test for differences in proportions of individuals with insurance coverage among the new drug and the placebo (hint: two variables). Write the hypotheses and the formula of the test statistic used (No computations required – formula only). d) Consider the test for differences in disease stage among treatments. Write the hypotheses and the formula of the test statistic used (No computations required – formula only). Are disease stage and drug assignment independent?

Consider the test for differences in age among the new drug compared to the placebo (two variables). Write the hypotheses and the formula of the test statistic used (No computations required – formula only). c) Consider the test for differences in proportions of individuals with insurance coverage among the new drug and the placebo (hint: two variables). Write the hypotheses and the formula of the test statistic used (No computations required – formula only). d) Consider the test for differences in disease stage among treatments. Write the hypotheses and the formula of the test statistic used (No computations required – formula only). Are disease stage and drug assignment independent?

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Description: Consider the test for differences in age among the new drug compared to the placebo (twovariables). Write the hypotheses and the formula of the test statistic used (No computationsrequired - formula only).c) Consider the test for differences in prop

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Concept explainers

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

Topic Video

Question

Consider the test for differences in age among the new drug compared to the placebo (two
variables). Write the hypotheses and the formula of the test statistic used (No computations
required - formula only).
c) Consider the test for differences in proportions of individuals with insurance coverage among the new
drug and the placebo (hint: two variables). Write the hypotheses and the formula of the test statistic
used (No computations required – formula only).
d) Consider the test for differences in disease stage among treatments. Write the hypotheses and the
formula of the test statistic used (No computations required - formula only). Are disease stage and
drug assignment independent?

5. The following table was presented in an article summarizing a study to compare a new drug to a
standard drug and to a placebo.
Standard Drug
44.9 (5.1)
Characteristic*
New Drug
Placebo
Age, years
45.2 (4.8)
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
35%
18%
33%
Stage I
Stage II
Stage III
*Table entries and Mean (SD) or %
42%
37%
47%
23%
51%
20%
a) Are there any statistically significant differences in the characteristics shown among the
treatments? Justify your answer.

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