Probability and Statistics
What is the mean of the data set below?
65, 65, 68, 69, 69, 69, 70, 72, 72, 99
71.8
How old is Miss Keller?
21
A box contains red markers, blue markers, and green markers. There are more blue markers than red markers. The probability of randomly selecting a blue markers from the box is 1/5.
What is a possible probability that a randomly selected marker from the box is red?
x < 1/5
(1/6,1/7,...)
What grade is Miss Keller going to teach next year?
7th Grade
Find the supplementary angle to the following: 35°
145°
A bowling alley charges x dollars per guest and a fixed $50 rental fee for parties. Which equation represents the total cost, y, for 9 guests?
y=9x+50
Lily’s class had an ice cream treat for her birthday. 26 students had ice cream. 12 had chocolate. 6 had strawberry. 8 had vanilla.
What fraction represents the part of Lily’s class that had strawberry?
3/13
What is Miss Keller's favorite color?
Blue
What is the area of a rectangle whose given side lengths are 8 cm and 12 cm?
96 square cm
The lengths of two sides of a triangle are 4 inches and 7 inches. What is a possible length, in inches, of the third side?
7 inches (between 3 and 11)
Two students bring rope to a camping trip. Jake has x feet of rope. Maggie has 4 times as much rope as Jake but then gives 2 feet away. Now Maggie has 58 feet of rope. How many feet of rope does Jake have?
Jake has 15 feet of rope.
A diver is at an elevation of -23 feet from sea level. He descends another 25 feet. How many feet does the diver need to ascend to reach sea level?
A survey of 800 students showed that 7 out of 16 students prefer reading fiction to nonfiction. Based on the results of this study, how many students in the population prefer to read fiction?
350 students would prefer fiction
What is Miss Keller's favorite fast food?
18 apples
Stella fills a pool with water. It takes 1/4 hour to fill the pool with 180 gallons of water. What is the unit rate in gallons per hour?
720 gallons per hour
There are 5 red, 2 yellow, 6 black, and 6 blue marbles in a hat. You pick 2 marbles from the hat. Marbles are not returned after they have been drawn. Identify what the probability is that the first marble is red and the second is black?
5/57
A scale model is built of the Empire State Building so that 1 cm is equivalent to about 12.5 feet. If the model is 100 cm tall, how tall is the Empire State Building?
1,250 feet tall.
Mary goes to the bakery with $35. She purchases 2 loaves of bread for $3 each and a cake for $15. She plans to spend the remainder of her money on cookies that cost $1.25 each. What is the greatest number of cookies Mary can buy?
11 cookies
Paige fills a large bucket with water. She fills it with 3/8 gallon of water in 1/4 minute. What is Paige's unit rate for filling the bucket, in gallons per minute?
12/8 or 1 1/2