The table to the right shows the frequencies of executives\' salary ranges at a

Question

The table to the right shows the frequencies of executives' salary ranges at a particular organization Salary Range Under $60,000 $60,000 to under $70,000 $70,000 to under $80,000 $80,000 to under $90,000 $90,000 to under $100,000 $100,000 or more Total Frequency a) How many executives at this organization earned $100,000 or more per year? b) What is the probability of randomly selecting an executive who eaned $100,000 or more per year? c) What is the probability of randomly selecting an executive who earned $60,000 or more per year? d) What is the probability of randomly selecting an executive who eamed between $70,000 and $90,000 per year? 4 a) Of the executives at this organization,earned $100,000 or more per year b) The probability of randomly selecting an executive who earned $100,000 or more per year is (Round to three decimal places as needed.) c) The probability of randomly selecting an executive who earned $60,000 or more per year is (Round to three decimal places as needed.) d) The probability of randomly selecting an executive who earned between $70,000 and $90,000 per year is (Round to three decimal places as needed.)

Explanation / Answer

a) Number of executives earned $100,000 or more = 22 - (3 + 4 + 7 + 3 + 3) = 2

b) P(Earned $100,000 or more) = 2/22 = 0.091

c) P(Earned $60,000 or more) = 1 - 3/22 = 19/22 = 0.864

d) P(Earned between $70,000 and $90,000) = (7 + 3)/22 = 10/22 = 0.455

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