<PRE><B>Question 285643</B>
A medical research project examined the relationship between a subject’s weight and recovery time from a surgical procedure, as shown in the table below.
 
 	      Underweight	 Normal weight	    Overweight   Totals
Less than 3 days 6	         15	                3           24
3 to 7 days	30	         95	                20         145
Over 7 days	14	         40	                27          81          
Totals          50               150                    50         250

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            a.  What is the probability a patient will recover in fewer than 3 days? :::::: 24/250
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            b.  Given that recovery takes over 7 days, what is the probability the patient is overweight?::::: 27/81 = 1/3
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Cheers,
Stan H 
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