**Sample Size
Calculation Problems**

1. Assume that previous fast food research has shown that 80% of the consumers like curlicue French fries. The researcher wishes to have an error of 6% or less and be 95% confident of an estimate to be made about curlicue french fry consumption from a survey. What sample size is necessary?

- A researcher at Walt Disney World knows wants to determine the average number of rides that a person visiting the Magic Kingdom takes on a one-day visit. They know that some people do not go on any of the rides while others may get on as many as 27 in a single day. The researcher wishes to have an error of +/- 2 rides and wishes to be 99% confident. What sample size is required?

*Mom & Pop Store*, a small retailer located in Wherever, VA wants to determine whether or not customers who participate in their*Mom & Pop Rewards Program*are satisfied with the benefits and services provided by the program. Rather than survey all 1750 of their customers who participate in the program, they’d like to conduct a sample. They have never conducted a survey before so they have no idea what percent of their customers are satisfied. The owners of*Mom & Pop Store*would like to be 95% confident in the results with error of +/- 5%. What sample size is required?