1. A sports equipment company conducts a survey of 1,000 people in the state of California. (For the purposes of this question, you can assume that this represents a simple random sample of all people in the state.) Of these, 165 report that they went camping in the past year.

(a) To do part (b) you need a box model. The SD of the box is ___________. Is the SD of the population known or estimated in this problem? ______________.