What does population proportion tell us about the population

Assignment Help Applied Statistics

Reference no: EM13909996

a. What does a population proportion tell us about the population?

b. Explain the difference between p and pˆ.

c. What is meant when a public opinion poll's margin of error is 3 percent?

2. Suppose we are using the sample size formula in the box on page 323 to find the sample size needed to make the margin of error in a confidence interval for p equal to E. In each of the following situations, explain what value of p would be used in the formula for finding n:

a. We have no idea what value p is-it could be any value between 0 and 1.

b. Past experience tells us that p is no more than .3.

c. Past experience tells us that p is at least .8.

Reference no: EM13909996

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