Question

courier service company wishes to estimate the proportion of people in various states that will use...

courier service company wishes to estimate the proportion of people in various states that will use its services. Suppose the true proportion is 0.06. If 328 are sampled, what is the probability that the sample proportion will differ from the population proportion by less than 0.03? Round your answer to four decimal places.

Homework Answers

Answer #1

Solution

=  [p ( 1 - p ) / n] =   [(0.06 * 0.94) / 325] = 0.0131

= P[-0.03 / 0.0131 < ( - ) / < 0.03 / 0.0131]

= P(-2.29 < z < 2.29)

= P(z < 2.29) - P(z < -2.29)

= 0.9780

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