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Estimate the true proportion of home

A report states that 38% of home owners had a vegetable garden. How large a sample is needed to estimate the true proportion of home owners who have vegetable gardens to within 4% with 95% confidence?

a. 142

b. 283

c. 566

d. 1132

18,76,764

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## Q : Incidence rate of waterborne diseases

What is the incidence rate of waterborne diseases in Africa? A patient suffering from a waterborne disease is randomly chosen from a clinic in an African village. What is the probability that this patient did not have access tosafe drinking water?