A 2015 study conducted by the National Center for Health Statistics found that

51%

of U.S. households had no landline service. This raises concerns about the accuracy of certain surveys, as they depend on random-digit dialing to households via landlines. Researchers pick

ten

U.S. households at random. Complete parts a through c.

Question content area bottom

Part 1

a) What is the probability that all

ten

of them have a landline?

0.000800.00080

(Round to five decimal places as needed.)

Part 2

b) What is the probability that at least one of them does not have a landline?

0.999200.99920

(Round to five decimal places as needed.)

Part 3

c) What is the probability that at least one of them does have a landline?

enter your response here

(Round to five decimal places as needed.)