.11 Verizon * 100% 5:38 PM webwork.pcc.edu MENU Courses Conditional Probability:
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.11 Verizon * 100% 5:38 PM webwork.pcc.edu MENU Courses Conditional Probability: Problem 20 Homework Sets Conditiona Probability Probl Previous Problem Problem List Next Problem (1 point) According to the U.S. National Center for Education Statistics, there are more than 63 million American workers 18 years old and over who use computers at work. From this study, which was conducted in 1994 and 1998 (Source: Statistical Abstract of the United States, 2000, Table 690), the following table of joint probabilities was developed 20 User Settings Grades Achievements Uses Spreadsheet Software |No Spreadsheet Use Female Male 0.34 0.25 0.24 0.17 Problems A. What proportion of workers use spreadsheet software? 59% Problem1 Problem2 B. What proportion of male workers use spreadsheet software? 5952381 Problem3 Problem4 C. What proportion of spreadsheet users are female? .58620 Problem 5 Note: You can earn partial credit on this problem Problem6 w My Answers Submit Answers Problem7 You have attempted this problem 6 times Your overall recorded score is 67% You have unlimited attempts remaining Problem8 Problem9 Problem Show Past Answers Problem Email instructor Problem 12 v Problem Problem 14 Problem 15 v Problem 16 VExplanation / Answer
A) P(worker uses spreadsheet software) = 0.34 + 0.25 = 0.59
B) P(uses spreadsheet software | male) = P(male and uses spreadsheet software) / P(male)
= 0.25 / (0.25+0.17)
= 0.59524
C) P(female | uses spreadsheet software) = P(female and spreadsheet software) / P(uses spreadsheet software)
= 0.34 / 0.59
= 0.57627
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