Ms. Fountaine needs two students to help her with two different demonstrations for her class of 12 girls and 14 boys. She randomly chooses one student, then the first students returns to his/her seat and can be chosen again for the second demonstration. What is the probability that both students are girls?
What is 36/49?
A bag contains 6 green marbles, 2 blue marbles, and 3 white marbles. Kevin draws one marble from the bag and replaces it. Elliot then draws one marble from the bag. P(blue and white)
What is 6/121?
What is the word used to represent all possible outcomes?
What is sample space?
A card is chosen at random from a deck of 52 cards. It is replaced and a second card is chosen. P(jack and 8)
What is 2/169
Brenda and her husband plan to have three children. What is the probability that all three will be boys?
What is 1/8?
When 'and' is used in probability it usually represents what operation?
What is multiplication?
80% of all drivers wear seat belts. If three drivers are pulled over, the probability that all would be wearing seat belts. Write as a percent to the nearest tenth.
What is 51.2%
When 'both' is used in probability it usually represents what operation?
What is multiplication?
A CD rack has 8 classical CDs, 5 pop CDs, and 3 rock CDs. One CD is chosen, replaced, then a second CD is chosen. P (rock and classical)
What is 3/32?
A nationwide survey showed that 65% of all children in the US prefer chocolate ice cream. If three children are chosen at random, the probability that all three prefer chocolate ice cream. Write as a percent to the nearest tenth.
What is 27.5%