Find the probability that the number of U.S. adults who say they have had someone take over their email accounts without their permission is

(a) at most 40,

(b) less than 45, and

(c) exactly 48.

Identify any unusual events. Explain.

In a survey of U.S. adults, 16% say they have had someone take over their email accounts without their permission. You randomly select 250 U.S. adults and ask them whether they have had someone take over their email accounts without their permission.