Question 959353
size of firm::::::large- medium- small
 rating  
 good::::::::::::: 28- 60- 57 = 145
 poor::::::::::::: 12- 40- 53 = 105
 Totals::::::::::: 40-100-110 = 250
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 if a firm is selected at random, what is the probability it
 (a) is large?:::40/250
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 (b) is large and has a good rating?:: 28/250
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 (c) is large or has a good rating?(40+145-28]/250
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 (d) has good rating given that it is large?:::28/40
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 (e) is small given that it has a good rating?::57/145
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Cheers,
Stan H.
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