Timed test.  You will see a series of 10 questions.  You have to write down the answer to the question.  Easy enough eh?  REMEMBER TO GIVE PROBABILITIES.

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Presentation transcript:

Timed test

 You will see a series of 10 questions.  You have to write down the answer to the question.  Easy enough eh?  REMEMBER TO GIVE PROBABILITIES AS EITHER:  FRACTIONDECIMALORPERCENTAGE

 A fair, 6-sided dice is thrown.  What is the probability of getting a 5?

 A fair, 6-sided dice is thrown 1200 times.  Roughly how many times would you expect the number 3 to come up?

 Sam’s pencil case contains 3 red, 4 blue and 5 black pens.  He takes a pen out without looking.  What is the probability that it is blue?

 A spinner has 5 sections with the following numbers on it:  Each section is equally likely.  What is the probability of the spinner landing on the number 4?

 A box contains 12 red, 20 green and 8 yellow sweets.  One is picked out at random.  What is the probability that it is not red?

 A fair, 6-sided dice is thrown.  What is the probability of getting a multiple of 3?

 The probability of Cheryl winning a race is 0.2  What is the probability that she doesn’t win?

 The probability that it will rain today is 0.85  What is the probability that it will not rain?

 A family has 3 children.  One possible combination is Boy, Boy, Girl  How many possible combinations are there?  (You do not need to list them.)

 A fair spinner has four sections labelled 1357  The spinner is spun and a fair coin is thrown.  List all the possible outcomes (eg H,1)  What is the probability of getting: Tails and a number less than 4?

 Answers on the next pages

 1) 1/6  2) 200  3) 4/12 = 1/3  4) 2/5  5) 28/40 = 7/10  6) 2/6 = 1/3  7) 0.8  8) 0.15  9) 8  10)h1,h3,h5,h7 t1,t3,t5,t7 2/8 = 1/4