Chips numbered 1 through 80 are shuffled in a basket. one chip is randomly selected.

what is the probability of selecting a number that is a multiple of 15?

This question awards 100 ! i really don’t want to fail i will also mark you !

How far could you drive on 50 gallons of gas

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.