456 1 3ul 8..California daily 3 lotto is based on 0 through 9 Jim plays same numbers for last

B. C. A roulette wheel has 38 spaces 18 red 18 black and 2 green. Suppose that in each spin of

4. In July of 2011 the state of Florida started testing all welfare recipients for the use of illeg

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The items in a sample are independent if knowing the values of some of the items does not help to pr

let A B and C be events in a sample space and P be a probability. Prove the following a If A and

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Jarvis Greene is a 5yearold kindergarten student in Ms. Claytor’s class at Hobbs Elementary Schoo

B. C. A roulette wheel has 38 spaces 18 red 18 black and 2 green. Suppose that in each spin of

4. In July of 2011 the state of Florida started testing all welfare recipients for the use of illeg

Applications 48 A survey showed that a majority of Americans plan on doing their holiday shopping

A Philadelphia taxi driver gets new customers at rate 15 per minute. With probability 13 the

The items in a sample are independent if knowing the values of some of the items does not help to pr

let A B and C be events in a sample space and P be a probability. Prove the following a If A and

The cafeteria line in the university student center is a selfserve facility in which students sele

1 pt A statistics professor finds that when she schedules an office hour for student help an ave

Jarvis Greene is a 5yearold kindergarten student in Ms. Claytor’s class at Hobbs Elementary Schoo

4. In July of 2011 the state of Florida started testing all welfare recipients for the use of illegal drugs. Statistics suggest that 8 percent of adult Floridians use illegal drugs; let us assume that this is true for welfare recipients as well. Imagine that the drug test is 92 percent accurate, meaning that it gives the correct response in 92 out of 100 cases. (a) What is the probability that a randomly selected welfare recipient in Florida uses (b) What is the probability that a randomly selected welfare recipient in Florida does (c) What is the probability that a randomly selected welfare recipient in Florida has (d) Given that a randomly selected welfare recipient in Florida has a positive test, illegal drugs and has a positive test? not use illegal drugs but nevertheless has a positive test? a positive test? what is the probability that they use illegal drugs?

P( xxxxxxxx | xxxxxxx xxxxx ) = x( negative | xx xxxxx ) = 0.92

b) xxx the xxxxxxxxxxy xxxx x randomly xxxxxxxx do xxx xxx xxxxxxx drugs xxx still xxxx x xxxxxxxx test xx computed xx:

= x( xx xxxxx , xxxxxxxx ) + x( xxxxxxx drugs , positive )

= x.xxxx