A survey is planned to determine what proportion of high-school students in a metropolitan school system have regularly smoked marijuana. The school administrators would like to estimate the proportion with 90 % confidence and a margin of error of no more than 4%.

• It was reported that 29.32% of high school students in a similar metropolitan area regularly smoke marijuana. If this estimate is used, what sample size would be required? n =
• If the administrators choose not to use the estimate from the similar metropolitan area, what sample size would be required? n =
• If the level of confidence were increased to 98 %, what would happen to the required sample size?
• A smaller sample size would be required.
• A larger sample size would be required.
• The sample size would not be affected.

Note: Don't forget the rounding rule discussed in class for sample sizes!