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.

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

Determine the number of outcomes in the event. decide whether the event is a simple event or not. upper a computer is used to select randomly a number between 1 and 9 comma inclusive. event upper b is selecting a number greater than 4. event upper b has nothing outcome(s). is the event a simple event? (yes or no) because event upper b has (fewer than, exactly, more than) one outcome.

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?