Homework Answers
Total sample size = 100 + 30 + 10 + 60 + 80 + 15 + 40 + 40 + 50 = 425
Hence,
a) P(Medium job satisfaction) = (60 + 80 + 15)/425 = 155/425 = 31/85 = 0.3647
b) P(Atleast medium income) = P(Medium) + P(High) = (30 + 80 + 40 + 10 + 15 + 50)/425 = 225/425 = 9/17 = 0.5294
c) P(High job satisfaction or high income) = (40 + 40 + 50 + 10 + 15)/425 = 155/425 = 31/85 = 0.3647
d) P(Low job satisfaction and medium income) = 30/425 = 6/85 = 0.0706
e) P(Low job satisfaction given low income) = 100/(100 + 60 + 40) = 100/200 = 1/2 = 0.50
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