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Q. A medical researcher is interested in determining if there is a relationship between adults over 50 who walk regularly also low, moderate, also high blood pressure. A random sample of 236 adults over 50 is selected also results are given below.

Blood
Pressure Adults over 50
Walkers Non-walkers
Low 35 21
Moderate
62 65
High 25 28

a. From contingency table, researcher concluded which there is relationship between adults over 50 who walk regularly also low, moderate, also high blood pressure.
Do you agree? Test using.

b. Construct a 95% confidence interval for true percentage of walkers with low blood pressure. Is sample size large enough to construct a valid confidence interval for p?

c. Elucidate how large a sample size is necessary to estimate proportion of walkers with low blood pressure within 10% with 95% confidence?

Operation Management, Management Studies

  • Category:- Operation Management
  • Reference No.:- M9311956

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