6.3 cast a die a number of independent times until a six appears on the up side of the die. (a) find the pmf of the number of casts needed to obtain that first six. (b) show that ∑ 1. (c) determine 1, 3, 5, 7, (d) find the cdf

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.