1.The following table shows the frequency distribution of the credit scores for a random sample of homeowners who recently refinanced their mortgage at Delaware Bank.

Credit score Frequency

700 to under 720 7

720 to under 740 14

740 to under 760 25

760 to under 780 16

780 to under 800 8

(a) Find the probability that a randomly homeowner has a credit score of 720 to under 740. (solution with explanation)

(b) Find the probability that a randomly homeowner has a credit score of at least 760. (solution with explanation)

(c) Find the probability that a randomly homeowner has a credit score of at most 740. (solution with explanation)

(d) Find the probability that a randomly homeowner has a credit score of between 720 and 780. (solution with explanation)

round your answers to three decimal places