# Question: Suppose we are using the sample size formula in the

Suppose we are using the sample size formula in the box on page 313 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.

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.

**View Solution:**## Answer to relevant Questions

In each of the following cases, determine whether the sample size n is large enough to use the large sample formula presented in the box on page 311 to compute a confidence interval for p. a. p̂ = .1, n = 30 b. p̂ = .1, ...Consider the marketing ethics case described in Example 8.8. One of the scenarios presented to the 205 marketing researchers is as follows: A marketing testing firm to which X company gives most of its business recently ...Explain why the finite population correction√(N – n) / N is unnecessary when the sample size is less than 5 percent of the population size. Give an example using numbers. How safe are child car seats? Consumer Reports (May 2005) tested the safety of child car seats in 30 mph crashes. They found “slim safety margins” for some child car seats. Suppose that Consumer Reports simulates the ...Recall that “very satisfied” customers give the XYZ-Box video game system a rating that is at least 42. Suppose that the manufacturer of the XYZ-Box wishes to use the random sample of 65 satisfaction ratings to provide ...Post your question