Recently,a report in a financial journal indicated that the 90 percent confidence interval estimate for the proportion of investors who own one or mutual funds is between 0.88 and 0.92.Given this information,the sample size that was used in this study was approximately 609 investors.

Question

Quizplus · Accepted Answer

The sample size is required to estimate the proportion within a given confidence interval. Given the 90 percent confidence interval estimate for the proportion of investors who own one or mutual funds to be between 0.88 and 0.92, and assuming a margin of error of 0.02, the sample size would be approximately 609 investors. Therefore, the statement is true.

Recently,a Report in a Financial Journal Indicated That the 90