Mathematics, 21.02.2020 18:03 montgomerykarloxc24x
In a large population, 3% of the people are heroin users. A new drug test correctly identifies users 93% of the time and correctly identifies nonusers 90% of the time. Answer the following, showingall work for fullcredit.
a) Draw the probability tree for this scenario. Label the outcomes and indicate
b) What is the probability that a person who does not use heroin in this
c) What is the probability that a randomly chosen person from this population
d) What is the probability that a randomly chosen person from this population
e) If a person tests positive for heroin, what is the probability that he/she is a all the probabilities on the tree. population tests positive? is a heroin user and tests positive? tests positive? heroin user?
Answers: 3
Mathematics, 21.06.2019 15:00, gabbyypadron
What are the relative frequencies to the nearest hundredth of the columns of the two-way table? a b group 1 102 34 group 2 18 14
Answers: 1
Mathematics, 21.06.2019 21:00, Kekkdkskdkdk
Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?
Answers: 2
In a large population, 3% of the people are heroin users. A new drug test correctly identifies users...
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