prac.mt2 ans

# prac.mt2 ans - Statistics 13A, Spring 2010, Practice...

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Statistics 13A, Spring 2010, Practice Midterm II 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 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 In the actual exam, the necessary tables will be attached. In this practice exam, please refer to the tables provided by the textbook. good luck! Midterm begins here. .. 1. An experiment consists of tossing 5 fair coins simul- taneously. The number of simple events in this ex- periment is: (a) 5 (b) 25 (c) 32 (d) 10 (e) none of the above answer: c ( 2 5 = 32 ) 2. Refer to Problem 1, what is the probability to get exactly three heads? (a) 3 5 (b) 5 16 (c) 1 2 (d) 2 5 (e) 11 16 answer: b ( C 5 3 32 = 10 32 = 5 16 ) 3. A fair die is tossed twice and event A= the sum of two tosses equals to 7, event B= the ﬁrst toss is 3.

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## This note was uploaded on 02/27/2012 for the course STA 13 taught by Professor Samaniego during the Spring '10 term at UC Davis.

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prac.mt2 ans - Statistics 13A, Spring 2010, Practice...

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