question 4

Assume that you wish to estimate a population proportion, p. For the given margin of error and confidence level, determine the sample size required. 4) A researcher wants to determine what proportion of adults in one town 4) regularly buy organic food. Obtain a sample size that will ensure a margin of error of at most 0.09 for a 90% confidence interval. In previous years, the proportion has been 0.22. A) 5 B) 174 C) 58 D) 51