Statistics/Probability
A bin at a farmer’s market has 18 peaches,
12 apples, 15 pears, and 9 bananas. Rosa
picks a piece of fruit at random from the
bin. Which statement about the fruit bin is true?
A. The probability of picking an apple is 2/9
B. The probability of picking a peach is 5/18
C. The probability of picking a banana is 1/7
D. The probability of picking a pear is 1/3
D
Marshall works at an animal shelter. He
makes sure all the cats are vaccinated. In
July, 56 of the cats entering the shelter had
already been vaccinated. Based on this result,
he predicts that if 115 cats enter the shelter,
92 of the cats have already been vaccinated.
How many cats entered the shelter In July?
70
There are 25 students who compete in a volleyball
tournament. There are 4 students with blue shirts, 11 students with white shirts, and 10 students with yellow shirts. A student is selected at random to be the captain. Match each probability with each outcome.
Likely, certain, Neither unlikely nor likely, unlikely, impossible
A. The captain has a blue shirt
B. The captain has a red shirt
C. The captain has a blue or white shirt
A- unlikely
B- impossible
C- likely
Mrs. Strong has a container of 5 pens and
she wants to those pens to use for going over
notes. How many different ways can she order the pens?
120
Write the formulas for finding AREA and CIRCUMFERENCE of a circle
(will only receive pts for getting them both correct!)
A= pi*r^2
C= 2*pi*r
C=pi*diameter
Joaquin plays a game with a deck of cards. There are 72 action
cards and 56 item cards. Joaquin selects a card at random, records whether it is an action card or an item card, and shuffles it back into the deck. In 9 trials, he selects 4 action cards and 5 item cards.
Which statement about the probability of selecting an action card is correct?
A. The theoretical probability is less than 1⁄2 , and the experimental probability is greater than 1⁄2.
B. The theoretical probability is less than 1⁄2 , and the experimental probability is less than 1⁄2 .
C. The theoretical probability is greater than 1⁄2 , and the experimental probability is greater than 1⁄2 .
D. The theoretical probability is greater than 1⁄2 , and the experimental probability is less than 1⁄2 .
B
Quinton drives through the same light on
the way to work and records his data, shown
below. He will drive through the light an
additional 319 times this year, how many
times should he expect the light to be green?
Red- 9 times
Yellow- 7 times
Green- 8 times
106 1/3
Jorge has a box with different colors of
tubes of paint. In the box, there are 7 tubes
of blue paint, 4 tubes of red paint, 3 tubes of
yellow paint, and 6 tubes of green paint.
Jorge selects a tube of paint at random.
Which is more likely: selecting a tube of blue
or yellow paint, or selecting a tube of green
or red paint? Explain your reasoning.
Equally as likely, same probability of 10/20=1/2
Alexander makes dumplings. He sells orders
with 1, 2, 3, 4 dumplings. The dumplings are
filled with tofu, chicken, or pork. The
dumplings can be ordered boiled or fried.
Each order includes only one filling and one
style of dumpling. What is the probability
that an order chosen at random includes pork dumplings?
1/12
Four friends go out to dinner and decide
to split the bill evenly. Each friend orders
a soda for $2.00, an entrée for $12.99
and they all four share a dessert for
$7.99. How much is the total bill?
$67.95
Suvaani asks a random sample of students
which activity they would prefer to have at
their school. Her results are shown in the
table. If there are 1,200 students in the
school, how many more will prefer basketball
and volleyball to volleyball and talent show?
Basketball game- 23 votes
Volleyball game- 12 votes
Talent Show- 5 votes
35/40*1200= 1050
17/40*1200= 510
540 more students prefer basketball and volleyball to volleyball and the talent show.
A bag of marbles consists of 5 green, 4
blue, 8 red, and 9 yellow. One marble is
selected at random. What is the
probability of selecting a blue or yellow marble?
13/26=1/2
Which probabilities are unlikely? Select all the correct answers.
A.1/2
B.1/9
C.11/12
D.2/5
E. 15/17
F. 4/20
B, D, F
Anya makes small, medium, and large
stickers. Each sticker has either a black
border or a white border. She offers both
removable and permanent stickers. How many outcomes are possible?
12
Are the two expressions below
equivalent? Explain why or why not.
-3x + 8 and 5x + 10 – 2 – 8x
Yes! Combine like terms in the second expression to see that they are equal.
James surveys 150 students who ride the
bus to find out their favorite food. Is this a
random sample? Make sure to explain!
No, students who don't ride a bus have no chance of being selected.
If you flip a coin 400 times, what is the
theoretical probability of landing on tails?
200 times
Terrence has forgotten to turn in his
homework 20% of the time this year. Is the
probability that he will forget tomorrow
likely, unlikely or neither? Make sure to explain!
Unlikely because 20% is less than half the time, making it unlikely for him to forget it tomorrow.
You roll a number cube and spin a four
sectioned spinner labeled 1-4. What is the
probability that you roll a number less than
5 and spin a 2?
4/6 * 1/4 = 1/6
What is the product of the degree measures of the complement and supplement of a 26 degree angle?
90-26= 64
180-26=154
154*64=9856