8. Refer to the following table summarizing results of a medical study. Answer the following using a a reduce fraction or decimal to three places. Survived Died Total Treatment A 120 80 20 200 Treatment B 20 40 Total 140 100 240
8. Refer to the following table summarizing results of a medical study. Answer the following using a a reduce fraction or decimal to three places. Survived Died Total Treatment A 120 80 20 200 Treatment B 20 40 Total 140 100 240
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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Transcribed Image Text:8. Refer to the following table summarizing results of a medical study. Answer the following using a a reduced
fraction or decimal to three places.
Survived
Died
Total
Treatment A
Treatment B
120
80
200
20
20
40
Total 140
100
240
(a) If one of the 240 participants is randomly selected, what is the probability that he received Treatment
A or survived?
(b) If one of the 240 participants is randomly selected, what is the probability that he received Treatment
B and survived?
(c) If two different participants are randomly selected, what is the probability that the first one survived
and the second one also survived? Note we are selecting without replacement- we need two different
participants.
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