JORDAN TA Question 4 of 7 Step 1 of 1 123:26:09 The state education commission w

Question

JORDAN TA Question 4 of 7 Step 1 of 1 123:26:09 The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the eighth grade level. In an earlier study, the population proportion was estimated to be 0.2. How large a sample would be required in order to esdmate the fraction of tenth graders reading at or below the eighth grade level at the 85 % confidence level with an error of at most 0.037 Round your answer up to the next integer 2 Points Keypad AnswerHow to Enter)

Explanation / Answer

here margin of error E = 0.03 for85% CI crtiical Z          = 1.4395 estimated proportion=p= 0.2000 required sample size n =         p*(1-p)*(/E)2= 369.00

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