A study of 248 advertising firms revealed their income after taxes Incoralter Taxes Under $1 million $1 million to $20 million $20 million or more Norbert Firms 132 63 Dpicture Click here for the Excel Data File .. 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.) Probably 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 complements only Special rule of addition only Either