SOLUTION: size of firm large- medium- small rating good: 28- 60- 57 poor: 12- 40- 53 q1.if a firm selected at random, what probability

Question 959353: size of firm
large- medium- small
rating good: 28- 60- 57
poor: 12- 40- 53
q1.if a firm selected at random, what probability it
(a) is large?
(b) is large and has a good rating?
(c) is large or has a good rating?
(d) has good rating given that it is large?
(e) is small given that it has a good rating?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
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
---------------
(b) is large and has a good rating?:: 28/250
===============
(c) is large or has a good rating?(40+145-28]/250
------------------
(d) has good rating given that it is large?:::28/40
-------------------------------------------------------
(e) is small given that it has a good rating?::57/145
==================================
Cheers,
Stan H.
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