Learn with an example
At Damon's Swimwear, 80 out of the 80 styles at the store are bikinis.

What percentage of
swimsuit styles at the store are bikinis?

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?