In order to better plan for student resources, the chairsperson of the mathemati

Question

In order to better plan for student resources, the chairsperson of the mathematics department at Broward College wants to estimate the percentage of students who own a computer. If we want to estimate that percentage based on survey results, how many students must we survey in order to be 90% confident that we are within four percentage points of the population percentage? Assume that the number of students is very large. In order to better plan for student resources, the chairsperson of the mathematics department at Broward College wants to estimate the percentage of students who own a computer. If we want to estimate that percentage based on survey results, how many students must we survey in order to be 90% confident that we are within four percentage points of the population percentage? Assume that the number of students is very large.

Explanation / Answer

( hence required sample size n=423 students)

here margin of error E = 0.04 for90% CI crtiical Z          = 1.645 estimated proportion=p= 0.500 required sample size n =         p*(1-p)*(z/E)2= 423.00

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