Give the definition of an experiment as it relates to probability.
What is an activity with varying results.
100
Give the equation for theoretical probability.
What is P(event) = #favorable outcomes/#possible outcomes
100
Give the equation for experimental probability.
What is P(event) = #times the event occurs/total # of trials
100
Give the definition of an independent event?
What is occurrence of one does not affect the likelihood that the other will occur.
100
Give the definition of a dependent event.
What is the occurrence of one event does affect the likelihood that the other event will occur.
200
Give the definition of an outcome as it relates to probability
What is possible results of an experiment
200
An event has a mathematical probability of 0.78. What does this mean?
What is there is a 78% chance you will get a favorable outcome
200
An inspector estimates that 1/2% of iPods are defective. In a shipment of 5000 iPods, predict the number that are defective.
What is 25
200
You flip heads on one coin and tails on another coin. Explain why this is independent.
What is the outcome of flipping one coin does not affect the outcome of flipping the other coin.
200
Give the formula for probability of a dependent event.
What is P(a and b) = P(A) x P(B after A)
300
Give the definition of an event as it relates to probability
What is a collection of one or more outcomes
300
Each letter of the alphabet is printed on an index card. What is the theoretical probability of randomly choosing any letter except R or P?
What is 24/26 or 12/13 or 92%
300
You flip a coin 20 times. You flip heads 12 times. Compare your experimental probability of flipping heads with the theoretical probability of flipping heads.
What is exp. 60% is close to theo. 50%
300
You flip two quarters, What is the probability that you flip two heads?
What is 1/4
300
You randomly choose two fish from the same fish bowl which contains one red fish and four gold fish. What is the probability that the first is red and the second is gold?
What is 1/5 or 20%
400
Is rolling an even number on a number cube an outcome, event, or experiment?
What is an event (collection of several outcomes)
400
Upon rolling a dice, determine if the game is fair. You win if the number is less than 3. If it is not less than 3, your friend wins. If it is not fair, who has the greater probability of winning?
What is not fair, your friend.
400
You check 20 cartons of eggs. Three of the cartons have at least one cracked egg. What is the exp. probability that a carton of eggs has at least one cracked egg?
What is 3/20 or 25%
400
You roll a number cube twice. First you roll a 4. Second you roll an even number. Is this dependent or independent? Explain.
What is independent. Outcomes of rolls do not affect each other.
400
You have a bag of 60 assorted mints. You randomly choose six mints. Two of the mints you choose are peppermints. How many of the 60 mints would you expect to be peppermints.
What is 20
500
A bargain page on iTunes contains Christian and rock albums. There are 60 albums on the bargain page. You are equally likely to randomly choose a Christian album or a rock album from the page. How many of the albums are Christian?
What is 30
500
There are 16 females and 20 males in a class. What is the theoretical probability of randomly choosing a female from the class?
What is 4/9 or 44.4%
500
During a 24 hr period the ratio of alternative songs played to punk rock songs played on a radio station is 60:75. What is the exp. prob. that the next song played is punk rock?
What is 5/9 or 55.6%
500
Give the formula for probability an independent event.
What is P(a and b) = P(A) x P(B)
500
A jewelry box contains two gold hoop earrings and two silver hoop earrings. You randomly choose two earrings. What is the probability that both are silver hoop earrings?