Simple Probability
The probability of rolling a prime number on a 6-sided number cube.
What is 1/2?
The set of all possible outcomes in a probability experiment.
What is the sample space?
The probability of spinning a 5 spaced spinner and rolling a die.
What is an independent event?
Tyrese rolls a 6-sided and records the results. He performs 180 trials. The probability he will roll a 4 after 180 trials.
What is 30 times?
In a survey about new hiking trails, which group is least likely to be a biased sample?
a.) Randomly chosen voters
b.) Randomly chosen drivers
c.) Randomly chosen hikers
d.) Randomly chosen gym members
What is C?
A bag contains every letter of the alphabet. Probability of choosing a vowel.
What is 5/26?
Total number of possible outcomes if a ski resort has 3 chair lifts, each with access to 6 ski trails.
What is 18?
All the letters of the alphabet are placed in a bag. You draw a tile then, draw a second tile without replacing the first.
What is a depenedent event?
A snack bar sells 19 of 25 hotdogs with relish. They sell 150 hotdogs in the day. The amount that will have relish on them.
What is 114?
The circumference of a circle is 18.84 feet. The approximate length of the radius.
What is 3 feet?
A jar contains 8 red marbles, 10 blue ones, and 2 yellow ones. Probability of choosing a yellow marble.
Rhee and Pamela are two of the five members of a band. Every week, the band picks two members at random to play on their own for five minutes. The probability that Rhee and Pamela are both chosen this week.
What is 1/10?
You roll a 6-sided number cube three times.
What is an independent event?
A bag contains 6 red marbles, 2 white marbles, and 1 gray marble. You randomly pick out a marble, record its color, and put it back in the bag. You repeat this process 45 times. The number of white or gray marbles you expect to pull.
What is 15 marbles?
A ratio that compars the amount of change between the dependent variable and the independent variable.
What is the rate of change?
There are 20 seventh graders and 15 eighth graders in a club. A club president will be chosen at random. The probability of choosing a 7th-grade club president.
What is 4/7?
Mattias gets dressed in the dark one morning and chooses his clothes at random. He chooses a shirt (green, red, or yellow), a pair of pants (black or blue), and a pair of shoes (checkered or red). Probability of choosing an outfit with red shoes.
What is 1/2?
There are 10 yellow, 6 green, 9 orange, and 5 red cards in a stack of cards turned facedown. Once a card is selected, it is not replaced. You draw 5 cards.
What is a dependent event?
John and O’Neal are playing a board game in which they roll two number cubes. John needs to get a sum of 8 on the number cubes to win. Probability that John will roll with a sum of 8.
What is 5/36?
A relationship between two quantities in which the ratio of one quanitity to the other quantity is constant.
What is proportional relationship?
Leona has 4 nickels, 6 pennies, 4 dimes, and 2 quarters in a change purse. Leona lets her little sister Daisy pick a coin at random. The probability that Daisy's coin is worth more than five cents.
What is 3/8?
A new shoe comes in two colors, black or red, and in sizes from 5 to 12, including half sizes (5.5, 6.5, etc.). A pair of the shoes is chosen at random for a store display. Find the probability it will be red and size 9 or larger.
What is 7/30?
There are 6 black socks and 4 white socks in a drawer. If one sock is taken out without looking and then a second is taken out.
What is a dependent event?
Every day, Navya’s teacher randomly picks a number from 1 to 20 to be the number of the day. The number of the day can be repeated. There are 180 days in the school year. The number of days the number of the day will be greater than 15.
What is 45 days?
A cube has a surface area of 54 square centimeters. Twelve cubes are combined to create a larger cube.
The volume of the new cube.
What is 324 cubic centimeters?