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Probability 101 Quiz Stats

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If you flip a fair coin, what is the probability it will come up heads? 1/2
98.2%
 1/4 1.2% 3/4 0% 1 0%
If you roll a fair six-sided die, what is the probability you get an odd number? 1/2
82.7%
 1/6 7.7% 1/4 1.8% 1/3 7.7%
A spinner is divided into six equal sections: three blue, two yellow, and one red. If each section is equally likely, what is the probability that a spin will land you in a yellow section? 1/3
81.5%
 1/6 3.6% 1/4 6% 1/2 3.6%
A card is drawn from a deck. What is the probability it is an ace? 1/13
75.6%
 1/52 11.3% 1/4 3% 4/13 3.6%
A gumball machine contains 100 blue, 100 yellow, and 100 red gumballs. If you purchase two gumballs, what are the odds that you have a matching pair? About 1/3
53%
A gumball machine contains 100 blue, 100 yellow, and 100 red gumballs. How many gumballs do you need to purchase to guarantee that you have a matching pair of any color? 4
50.6%
 3 5.4% 102 13.7% 202 9.5%
If you flip a coin 100 times and it comes up heads every single time, what can you conclude? Neither of the above
50%
 It’s a two-headed coin 12.5% The coin is not fair 13.7% Both of the above 14.3%
A gumball machine contains 100 blue, 100 yellow, and 100 red gumballs. If you purchase two gumballs, what are the odds that you have two blue ones? About 1/9
48.8%
What is the expected value of the average of 1000 rolls of a fair six-sided die? 3.5
44%
 6 11.9% 1000 9.5% The Spanish Inquisition 5.4%
A cat has four kittens. If each kitten is equally likely to be a boy or girl, which of the following is the most likely? Three kittens are one gender and one is the other
25%
 All kittens are the same gender 2.4% Two kittens are boys and two are girls 44.6% Three kittens are boys and one is a girl 3%

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Created Sep 22, 2017
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