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Do Homework-Edgar Antonyan-Google Chrome Secure | https://www.mathxl.com/Student/PlayerHomework.aspx?homeworkld Introduction to Statistics-Fall 2017 Web Homework: Hwk7-2 Score: 0 of 1 pt 10 of 13 (0 complete) 7.2.31 Save Score: 0%, Next Question Question Help Use the given data to find the minimum sample size required to estimate a population proportion or percentage Margin of error five percentage points, confidence level 95%, from a prior study, p is estimated by the decimal equivalent of 58% n-l(Round up to the nearest integer )

Explanation / Answer

p = 0.58

Z for 95% confidence interval = Z0.975 = 1.96

Margin of error = Z0.975 * sqrt (p * (1- p) /n)

Or, 0.05 = 1.96 * sqrt (0.58 * 0.42 / n)

Or, n = 374.3

Or, n = 374

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