2 proportion z-test 3. In a study done in Michigan, it was determined 38 (out of 62) poor children who attended pre-school needed social services later in life compared to 49 (out of 61) poor children who did not attend preschool. Does this study provide significant evidence that preschool reduces the need for social services later in life?

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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2 proportion z-test
3. In a study done in Michigan, it was determined 38 (out of 62) poor children who attended
pre-school needed social services later in life compared to 49 (out of 61) poor children
who did not attend preschool.
Does this study provide significant evidence that preschool reduces the need for social
services later in life?
4. A drug company creates a medicine designed to prevent colds, and states that it is equally
effective for men and women. To test this claim, they give the medicine to 100 men and
200 women.
At the end of the study, 33 men and 95 women caught a cold. Can we say that the drug is
equally effective for men and women? (Use a =
Transcribed Image Text:2 proportion z-test 3. In a study done in Michigan, it was determined 38 (out of 62) poor children who attended pre-school needed social services later in life compared to 49 (out of 61) poor children who did not attend preschool. Does this study provide significant evidence that preschool reduces the need for social services later in life? 4. A drug company creates a medicine designed to prevent colds, and states that it is equally effective for men and women. To test this claim, they give the medicine to 100 men and 200 women. At the end of the study, 33 men and 95 women caught a cold. Can we say that the drug is equally effective for men and women? (Use a =
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