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Excercices:. Q4.3.4 : Page 111 The same survey data base cited shows that 32 percent of U.S adults indicated that they have been tested for HIV at some points in their life .Consider a simple random sample of 15 adults selected at that time .Find the probability

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Excercices
Excercices:

Q4.3.4: Page 111

The same survey data base cited shows that 32 percent of U.S adults indicated that they have been tested for HIV at some points in their life .Consider a simple random sample of 15 adults selected at that time .Find the probability

that the number of adults who have been

tested for HIV in the sample would be:

Text Book : Basic Concepts and Methodology for the Health Sciences


Solution n 15 p 0 32 q 1 p 0 68
Solutionn=15 , p= 0.32 ,q= 1-p=0.68

Text Book : Basic Concepts and Methodology for the Health Sciences


Excercices

  • (a) Three (Ans. 0.1457)

  • (b) Less than two (Ans. 0.02477)

    (c ) At most one (Ans. 0.02477)

  • (d) At least three (Ans. 0.9038)

    (e) between three and five ,inclusive.

Text Book : Basic Concepts and Methodology for the Health Sciences


Q4 3 5
Q4.3.5

  • refer to Q4.3.4 , find the mean and the variance?

  • (Answer: mean = 4.8 ,

  • variance =3.264

  • Standard deviation= 1.807

  • )

Text Book : Basic Concepts and Methodology for the Health Sciences


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