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mt1.a key

# mt1.a key - Statistics 13A Spring 2010 Midterm I April 23...

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Statistics 13A, Spring 2010, Midterm I, April 23, 1:10pm to 2:00pm, Version A Name: ID: Instructions: 50 minutes, closed book midterm one letter-sized (double-sided) “cheat-sheet”, hand held calculator and scrap paper are allowed 20 multiple choice problems, 5 points each put your name & ID on this midterm and scantron hand in both this midterm and scantron (the midterm will be used as a proof of your presence in the un- likely event of missing scantron) grading is based on scantron which will not be re- turned to you this is Version A, please mark the corresponding circle on the scantran good luck! Midterm begins here... 1. Which one among the following is a discrete quanti- tative variable ? (a) number of aircrafts arriving at SFO in a day (b) length of time between arrivals in an outpatient clinic (c) letter grades received in a course (d) time required to finish an exam (e) depth of a snowfall answer: a 2. A politician who is running for the office of gover- nor of a state with 9 million registered voters com- missions a survey. In the survey, 45% of the 50,000 registered voters interviewed say they plan to vote for her. In this study, the sample is the:

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mt1.a key - Statistics 13A Spring 2010 Midterm I April 23...

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