Find The Sample Size N Needed To Estimate The Percentage Of Adults. Use a 008 margin of error use a confidence level of 98 and use results from a prior poll suggesting that 19 of adults have consulted fortune tellers. The sample size to use to estimate the population proportion is found with the equation.
B Find the minimum sample size needed using a prior study that found that 22 of the respondents said they think Congress is doing a good or excellent job. N z2 p 1 - p e2. Please dont forget to rate.
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Now insert the values from the problem into the formula. C Compare the results from parts a and b. Eqn dfrac Z2pi 1 - pi e2 eq where Z is the Z score eqpi eq is the population. Find the sample size n needed to estimate the percentage of adults who have consulted fortune tellers.
