Basic Probability
A bucket contains a set of magnetic alphabet letters. If a letter is drawn at random, what is the probability that it is a letter in the word COMPUTER?
8/26 or 4/13
Mrs. Sullivan's security system has a code with 5 digits. How many unique codes are possible?
100,000
The outcome of one event does NOT affect the outcome of the other event.
Independent Event
If all 50 states is the population, what would a sample?
Answers will vary.
How many sides are there on a dice?
6
There is a 30% chance of rain on Thursday. What is the percentage that it won't rain on Thursday?
70%
A card is chosen from a standard deck, then a month of the year is chosen. Find the probability of choosing a red card and August.
1/24
There are 2 green pencils, 5 yellow pencils, 10 red pencils and 2 black pencils. A pencil is drawn, not replaced, then another pencil is drawn.
What is the probability of drawing a green pencil and then a orange pencil?
0
Mrs. Sullivan wants to redecorate her classroom. She surveys 15 of her female students for their suggestions. Why is this sample biased?
Because she is only asking female. It is not random.
What is the most popular ice cream topping?
Chocolate Syrup
Define Theoretical Probability.
What should happen in an event
If a letter from HOLLY POND is chosen, what are the odds that it is NOT a vowel?
7/9
There are 2 green pencils, 5 yellow pencils, 10 red pencils and 2 black pencils. A pencil is drawn, not replaced, then another pencil is drawn.
What is the probability of drawing a green pencil and then a black pencil?
2/171
Mr. Edmondson wanted to know how students felt about the conditions of our school buses. 100 students ride our buses everyday, he surveyed the 6 random students one morning.
Is this sample unbiased or biased?
biased - sample is too small
What is the age of the oldest living tree on earth?
(closest guess wins)
5,602
A volleyball team has 3 freshman, 2 sophomores, 6 juniors and 4 seniors. If a captain is chosen from the juniors and seniors, what are the odds that they are not a senior?
6/10 or 3/5
A die is rolled and a letter from the alphabet is chosen. What is the probability of rolling an even number and randomly choosing a vowel?
5/52
What is the probability of rolling a prime number and then a perfect square?
1/6
What are the three requirements for an unbiased sample?
1. Representative of the larger population
2. Selected at random
3. Large enough to provide accurate data
In Greek mythology, who is the Goddess of Spring?
Persephone
A card is randomly chosen from a standard deck of cards. Find the probability of not choosing a black 5.
50/52 or 25/26
In Wisconsin, every basic license plate contains 3 letters and 4 numbers. How many unique license plates are possible?
175,760,000
A card is randomly drawn from a standard deck of cards. Then a day of the week is chosen.
What is the probability of choosing a heart and a day of the week that starts with T?
1/14
__________ is an entire group of people or objects.
Population
What does the SPF on sunscreen stand for?
Sun Protection Factor