Gina places biscuits in a circular pan in the fashion shown to the right. What is the area of the pan not covered by a biscuit if the
diameter of each biscuit is 2 cm? Use 3.14 for pi.

As a manufacturer of golf equipment, the spalding corporation wants to estimate the proportion of golfers who are left-handed. how many golfers must be surveyed if we want 99% confidence that the sample proportion has a margin of error of 0.025? assume that a previous study suggests that 20% of golfers are left-handed.