A recent survey found that 69% of all adults over 50 wear

Last updated: 7/19/2022

A recent survey found that 69% of all adults over 50 wear glasses for driving. In a random sample of 70 adults over 50, what is the mean and standard deviation of those that wear glasses? mean: 48.3; standard deviation: 6.95 mean: 48.3; standard deviation: 3.87 mean: 21.7; standard deviation: 3.87 mean: 21.7; standard deviation: 6.95