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# Rule of Probability

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A study of 203 advertising firms revealed their income after taxes:
Income after Taxes Number of Firms

Under \$1 million 102

\$1 million to \$20 million 54

\$20 million or more 47

(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 could be applied?

##### Solution Summary

Rule of Probability is evaluated.

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• BSc, Meerut University
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• MPhil, Institute of Advanced Studies
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