1) Suppose you observe the color of socks worn by students in your class: 12 have white, 4 have black, 3 have blue, and 1 has red. Find the experimental probability of a student wearing red socks a) unlikely b) likely c) impossible d) even chance 2) The probability that a twelve-year-old has a brother or sister is 25%. Suppose you survey 300 twelve-year-olds. About how many do you think will have a brother or sister? a) 25 b) 75 c) 150 d) 1200 3) 5 red marbles, 6 green, 2 blue. what is the probability of not picking blue? a) 5/13 b) 1/2 c) 13/13 d) 11/13 4) A total of 75 bracelets were sold. What is the probability of getting a silver bracelet? a) 11/25 b) 12/75 c) 33/45 d) 6/25 5) What is the probability of landing on an even number or 3? a) 37.5% b) 62.5% c) 50% d) 0% 6) Using the Venn diagram, what is the probability of picking someone who likes both apples and oranges? a) 14/19 b) 5/19 c) 7/19 d) 4/19 7) In a standard deck of cards, what is the probability of choosing a club? a) 1/52 b) 1/4 c) 1/13 d) 1/2 8) What is the sample space of a coin? a) H b) HH, HT. TH. TT c) T d) H, T 9) What percent of the sports lovers are women? a) 4.1% b) 9.9% c) 12% d) 37.5% 10) There are 4 green marbles, 6 red marbles, and 2 yellow marbles in a bag. You are going to draw a marble out of the bag and roll a 6 sided dice. How many different outcomes are there? a) 30 b) 65 c) 72 d) 80

Prob_Ability

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