A study of 195 advertising firms revealed their income after taxes:

Income after TaxesNumber of FirmsUnder $1 million104$1 million to $20 million50$20 million or more41

a.What is the probability an advertising firm selected at random has under $1 million in income after taxes?(Round your answer to 2 decimal places.)

Probability

b-1.What is the probability an advertising firm selected at random has either an income between $1 million and $20 million, or an income of $20 million or more?(Round your answer to 2 decimal places.)

Probability

b-2.What rule of probability was applied?

Rule of probability(Click to select)Special rule of addition onlyEitherRule of complements only