the monthly incomes of personal trainers at a local fitness center are normally distributed with a mean of $ 3150 and a Standard deviation of $236 a ) what is the probability that the personal trainers earn more than $2800 a month by what is the probability that the trainers earn less than $3200' a month " what is the probability that the trainers carn . between $ 2800 and $3300 ? al 25.78% of the personal trainer earn less than what amount ? 2 71.23%. of the trainers earn more than what amount