Quiz82 - b. the chosen 5 th grades would like to work in...

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Name: _______________________ Statistics Quiz #8: Chapter 14 Please Show All Work!!!!! 1. An elementary school in Oakland takes a survey of its entire 5 th grade class and discovers that 20% of the students would one day like to become doctors, 5% would like to become pharmacists, 15% would like to be nurses, 18% would like to become lawyers, 10% want to become teachers, 20% dream of becoming professional athletes and the rest don’t know what they would like to do when they grow up. If we randomly pick one student from the 5 th grade class at this elementary school, what is the probability that a. the chosen 5 th grader doesn’t know what (s)he wants to be when (s)he grows up?
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Unformatted text preview: b. the chosen 5 th grades would like to work in the medical field? 2. We now decide to pick 2 students at random from the 5 th grade class at the elementary school described in problem 1. What is the probability that: a. neither student picked wants to be a doctor b. both want to be lawyers c. at least one wants to be a nurse 3. To do the previous problem, you had to use a special probability rule. a. What assumption must you make about the students in order use the rule properly? b. Do you think this assumption is reasonable? Explain....
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