One of the Leading Dot-Com Companies Has Found That the Proportion

question 129

Multiple Choice

One of the leading dot-com companies has found that the proportion of customers who come into its Web site that actually makes a purchase is 0.045. The company plans to see whether this rate still holds by selecting a random sample of 200 hits on its Web site. Given that the 0.045 rate still applies, what is the standard deviation of the sampling distribution?

• A) Approximately 0.0147
• B) About 0.0002
• C) About 0.0354
• D) Can't be determined without knowing the mean.