A study of 185 advertising firms revealed their income after taxes: Incone after Taxes Under $1 million $1 million to $20 million $20 million or more Number of Firms 84 51 50 Click here for the Excel Data File 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. 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