Online Homework System Assignment Worksheet 3/3/17 - 1:11:11 PM MST Name: ____________________________ Class: FDMAT 108: 80 (Online); Winter 2017 Class #: ____________________________ Section #: ____________________________ Instructor: Greg Vogel Assignment: Exam 3 Practice Exam Question 1: (1 point) A bag contains 6 red marbles, 3 blue marbles, and 1 green marble. After shaking them up thoroughly, you randomly select 2 marbles from the bag without replacement. What is the probability of selecting 2 red marbles? (a) 0.33 Question 2: (1 point)In many board games, you are allowed another turn if you roll doubles (two of the same number). What is the probabilitythat this couldhappen to you two times in a row ? Question 3: (1 point)There are 13 members on a board of directors. If they must form a subcommittee of 4 members, how manydifferent subcommittees canbe formed? (d) 17,160 total marbles: 10 1st grab: 6/10 2nd grab: 5/9 6/10 * 5/9 = 0.33
Question 4: (1 point)Suppose you have a box of 8 crayons. Without looking, you take 3 crayons from the box (without replacement). Then you replace thecrayons and your friend does the same thing. What is the probabilitythat you both choose the same 3 colors in the same order? Question 5: (1 point)If there are 18 girls in your math class, and you want to study for each exam with a different one (there are 5 exams), how manyways canyou do this? Assume you don't care which exam you study for with each girl. (a)8568(b)over a billion(c)1,028,160(d)1,889,568 Question 6: (1 point)Suppose a high school organization decides to raise money by rafﬂing a trip worth $500. If 3000 tickets are sold at $1 each, find theexpected valuefor a person who buys 1 ticket.
Question 7: (1 point)You have a 10-year student loan of $8,000 with and APR of 6.5% compounded monthly. If you take the entire 10 years to pay it off, whatpercent of your total payments will have gone to interest? Question 8: (1 point)Suppose a math class has 26 girls and 21 boys in it. If 2 students names are drawn at random from a hat with replacement, what is theprobabilitythat they are both girls?
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- Fall '11
- Math, Interest, Probability theory