I need to find a: Function on Calculator Used b: values in equation formc: the interval found using proper notation ( rounded to 4 decimal places)

Ula : (= PIZ (SM ) cauation. (2 . 1 3 -156 )=0.28Answer: 69, 8491 51 11 3. As a manufacturer of golf equipment, the Spalding Corporation wants to estimate the proportion of golfers who are left-handed. a) How many golfers must be surveyed if we want to be 99% confident that the sample proportion is within 0.025 of the actual value? b) If a prior study indicates that 15% of golfers are left-handed, how many golfers must be surveyed if we want to be 99% confident that the sample proportion is within 0.025 of the actual value