Suppose 58% of the doctors in america are dentists. if a random sample of size 630 is selected, what is the probability that the proportion of doctors who are dentists will be less than 57%? round your answer to four decimal places.

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?