{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

scan0043

# scan0043 - (3 f 5 ’ r ~ 1 3 A medical investigator is...

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: (3'? f 5, % ’ r ~, 1 3. A medical investigator is studying two drugs identical in appearance numb ﬂed 1 or 2; When the drugs are injected in guinea pigs the probabilities that an antitoxin Will develop are 1/4 for number 1 and 1/3 for number 2, There are two bottles of number 1 and three bottles of number 2. The investigator, in hurrying to give a demonstration of these drugs, takes one bottle without noting its number. In transit the label is torn off (a) \Vhat is the probability that the selected bottle is number 1? :: \§ 1,: , .» /§* (b) What is the probability that the selected bottle is number 2‘? . r v_._ 4 WV ‘ ’7/5 , \ \v ‘x, (c) What is the probability that no antitoxin forms for number 1'? “V“: {3 ”‘1‘ \ ,« i ‘ w it; {l \llx‘} (d) What is the probability that no antitoxin forms for number 2? '2. " \ m, :15" 2 ,y g i Z 1 10‘1" g’Ql 1 t ' , {i 2) l 3 ,1? (c) When a guinea pig is injected with this drug, no antitoxin forms. What is the probability that it was drug number 27 hint: P(A)P(F§ A) P A B‘ - x < l ) P(A)P(B[A) + P(ACJP(B|AC) (if? e? s» x: I,» is? I): / ...
View Full Document

{[ snackBarMessage ]}