13. FILE À study of 200 advertising firms Income after Taxes Number of Firms Under $1 million 102 $1 million to $20 million 61 37 $20 million or more a. What is the probability an advertising firm selected at random has under $1 million in income after taxes? b. What is the probability an advertising firm selected at random has either an in- come between $1 million and $20 million, or an income of $20 million or more? le of probahility was annlied?
13. FILE À study of 200 advertising firms Income after Taxes Number of Firms Under $1 million 102 $1 million to $20 million 61 37 $20 million or more a. What is the probability an advertising firm selected at random has under $1 million in income after taxes? b. What is the probability an advertising firm selected at random has either an in- come between $1 million and $20 million, or an income of $20 million or more? le of probahility was annlied?
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
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Transcribed Image Text:13. FILE A study of 200 advertising firms revealed their income after taxes:
Income after Taxes
Number of Firms
Under $1 million
$1 million to $20 million
$20 million or more
102
61
37
a. What is the probability an advertising firm selected at random has under $1 million
in income after taxes?
b. What is the probability an advertising firm selected at random has either an in-
come between $1 million and $20 million, or an income of $20 million or more?
What rule of probability was applied?
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