Find the decimal rating of a sound, d= 10 log 1/1 o, having intensity 1,000,0001o, where 1o, is the initial intensity.

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.