1.
A group of 10 people are gathered in a blood bank. Two of them have a blood type of B, three have a blood type of A, two have type AB and three have type O. A nurse comes to the door and picks a donor randomly of the list.The probability that the nurse picks someone with a blood type:a) of B is Pr(B) =__________ b) of A is Pr(A) =__________ c) of O is Pr(O) = __________(Answer like this: b) Pr(A) = ?/?)
2.
A boy has been making two spinners, both with three even sections. The first has a section coloured blue, the second is red and the third is green. The second spinner has a different number in each section, the first section is 1, the second is 2, the third is 3. Before spinning he decides to record what colour it lands on, then after that, what number it lands on each time, in a table. After spinning it 20 times he produced this table: Red GreenYellowTOTAL1311523014353311TOTAL113620Through his results, we can deduce that using his spinners:a) the probability of obtaining a red is _______b) the probability of obtaining a 2 is _______c) the probability of obtaining the combination of red and 1 is _____(Answer like this: a) relative frequency = Number of times the outcome occurs total number of trials in experiment
3.
Jenny is expecting a prize from a contest she entered, to arrive in 7 weeks. 6 weeks leading up to the arrival of the letter she recorded the time the post man passed her house and she constructed this table.WeekTime12.30 pm22.00 pm31:30 pm42:30 pm52:00pm62:30 pma) What is the probability that the letter arrives at 2.00 pm?b) What time is it most likely to not arrive at?c) What time is the prize most likely going to arrive at?(answer like this: a) Pr(at 2.00pm) = ?/?)
4.
A man has a bag of containing 12 marbles, 6 of which are green, 3 are blue and 3 are red. If the man is to reach into the bag, as a fraction, what is the probability that he produces a green marble?
5.
If I was to roll a fair, six sided die, the probability that the die was to land with the number '4' facing up is...(answer like this: ?/?)
6.
A die is rolled and a coin is tossed, what is the probability that the die would show an odd number after the coin showed a head.(Answer like this: Pr(Head then Odd number) = ?/?)
7.
A boy is playing with a deck of cards and he separates all 4 of the aces and he lays them on the table face down next to each other. What is the probability he picks an ace of diamonds off the table?
A.
Pr(Ace of Diamonds) = 1/4
B.
Pr(Ace of Diamonds) = 3/4
C.
Pr(Ace of Diamonds) = 1/2
8.
A girl reaches into her mailbox to get the mail from it. Inside the mail box there are 5 letters, two of which are for her. What is the probability that the first letter she produces is for her?(Answer like this: Pr(One of her own letters) = ?/?)
9.
A little girl is celebrating her birthday and her father goes out to a toy store to buy a toy doll. There are a shelf of 12 different toy dolls. The father has option of buying a doll with blonde, brown or red hair, and after choosing the hair colour he has the option of buying a doll with a pink, red, blue or green dress.He has forgotten that his daughter asked for a doll with blonde hair and a blue dress or a red haired doll with a green dress, so he decides he will pick one at random. What is the probability he picks either one of the dolls the daughter has asked for?(Answer like this: Pr(Blonde & Blue or Red & Green) = ?/?
10.
True or False?If an event is equally likely to occur or not occur, it can be expressed as having a 50% chance of occurring.
11.
Two brothers met once a week for a month to play a game of chess with each other and Jeff beat his brother, Jerry, at 3 out of the 5 games they played. If they were to meet again the following week, what is the probability that Jerry would win?
12.
Select the word that should fill in the blank.A company that supplies plastic lids for milk bottles, creates a batch of defective lids so they are boxed up and disposed of, unfortunately, 10 of these lids have been mixed with a batch of 100 good lids and the combination of good lids and bad lids gets shipped to a milk jug company. The milk company puts lids on ten bottles before the milk bottle lid attachment system breaks down due to electrical issues. It is _______ that the 10 bottles with lids are defective.
13.
Select two of the following options that should fill in the blanks.A teacher angrily confiscates 10 pens from her students because they have been using them as spit ball shooters and shooting spit balls at her when her back is turned. She gathers their pens and puts them on her desk, mixing them with two identical pens of her own. She sits at her desk and reads a disconcerting email and nervously picks up a pen and begins chewing on it.Out of the ______ pens on her desk, it is _______ that she has picked up a students saliva covered pen.
14.
A girl flips a coin then rolls a six sided dice, what is the probability that she gets a heads, then a 4 on the dice?
15.
True or false.Someone would be more likely to produce an orange from a bag filled with 7 oranges and 10 apples?
16.
What is the probability of rolling three fair, six sided dice and producing three sides with a '6' facing up?(answer like this: Pr(Three 6's) = ?/?)
17.
What is the probability of flipping two coins and getting two heads?(answer like this: Pr(Two Heads) = ?/?)
18.
A school is doing a fundraiser and they have sold 20 tickets. The tickets are numbered 1 to 20 and Ben has bought all the tickets that are multiples of 3 or 5 in hopes to win the prize. If the tickets are drawn at random. What is the probabiltiy that the ticket drawn has a number bought by Ben?
19.
What is the probability of getting the sum of 9 after rolling two six sided dice?
20.
A bag contains 2 red, 3 green and 2 blue balls. If two balls are drawn at random, what is the prbability that none of these balls drawn are blue?
21.
A woman is packing to go on an overnight trip and grabs three shirts, from her wardrobe, randomly. There are 4 white shirts, 5 red shirts and 6 blue shirts. What is the probability that all of the drawn shirts are red?
22.
There are 21 cars in the car lot and a father is buying his son his first car. Ten of the cars are pink, 5 red, 4 blue and 2 green. The father has written the registration numbers of all the cars and put them in his hat, what is the probability that the registration number he pulls out belongs to a blue car?
23.
A card is drawn from a pack of 52 cards. The probability of getting a Queen of Clubs or a King of Hearts is:
24.
One card is drawn at random from a pack of 52 cards. the probability that this card is a face card (King, queen, or Jack) and is of the suit of hearts is:(answer like this: Pr(Face card and Hearts) = ?/?
25.
A small girl looks out her window every day for a week at 7.00 am. At this time she records the colour of the car that drives past next. She constructed a table like the following: DayCar Colour1Red2Blue3Red4Pink5Yellow6Blue7RedFrom her results, we can guess that the most likely coloured car to pass by her house will be ________ with a probability of _______(answer like this: Colour, Pr(Colour) = ?/?)