And the total is?
You can order chicken tenders with three or five pieces. They come spicy or mild and there are five different dipping sauces.
This is the number of ways you can order your chicken tenders.
What is 20.
2 sizes * 2 spice types * 5 sauces.
Married Single
High school. 550 830
College 945 370
This is the probability of a person having attended only high school.
What is .512 or 51.2%
(550 + 830)/(550 + 945 + 830 + 370)
If A and B do not affect each other, this is the formula to calculate P(A and B).
What is P(A and B) = P(A)*P(B)
Because "do not affect each other" -> independent.
This is the probability of picking the digits of your age, in order, from a regular deck of cards.
What is .006 or .6%
(4/52)*(4/51)
This is the letter you would put between 8 and 3 to determine the number of ways 3 horses could finish a race if 8 are running.
What is P.
The order you finish matters!
This is the number of phone numbers that have the 732 area code.
What is 10,000,000.
10*10*10 *10*10*10*10
Married Single
High school. 550 830
College 945 370
This is the probability of a person having attended college given they are single.
What is .308 or 30.8%
370/(370 + 830)
If A and B cannot happen at the same time, this is the formula for P(A or B)
What is P(A or B) = P(A) + P(B)
because "cannot happen at the same time" means they are mutually exclusive.
Married Single
High school. 550 830
College 945 370
This is the answer to P(Married|College)
What is .719 or 71.9%
945/(945+370)
This is what you would type into the calculator to find the number of ways to hire 2 new sales associates from a pool of 38 applicants.
38C2
They will both be sales associates so the order they are hired does not matter.
This is the number of phone numbers that exist with only even digits.
What is 1,220,703,125
even digits are 0, 2, 4, 6, 8 -> 5 of them -> 5^13
Married Single
High school. 550 830
College 945 370
This is the probability of a person having attended only high school or is single.
What is .649 or 64.9%
P(HS or S) = P(HS) + P(S) - P(HS & S)
= 1380/2695 + 1200/2695 - 830/2695
This is the opposite of "At least one joined the military"
What is "None joined the military"
As of February 2021, 85% of adults in the US own a smart phone.
This is the probability that if a random group of 4 people is selected, all of them will have smart phones.
What is .522 or 52.2%
.85*.85*.85*.85 or .85^4
This is the number of ways I can pick one adult and 2 children from a list of 50 people in which 14 are adults.
8820
1 adult AND 2 children = 14C1 * 36C2
This is the probability that a telemarketer will call your cell phone if a random number within your area code is generated by their computer.
What is .0000001 or 1E-7 or 10^-7
1/10^7
Married Single
High school. 550 830
College 945 370
This is the probability of a person having attended only high school and is single.
What is .308 or 30.8%
830/2695
This is the type of probability being used if you determine that the probability of passing the Chapter 3 test is 78% based on what Mrs. J has seen in previous years.
What is Empirical
Based on data.
If the probability of being born female is 51.3%, this is the probability that at least one baby among fraternal triplets is not female.
What is .865 or 86.5%
P(at least one is not F) = 1 - P(All F) = 1 - .513^3
This is the probability that I will choose 2 red and 5 green marbles from a jar of marbles that contains 10 red, 10 green, 10 yellow, and 10 blue marbles.
What is .0006 or .06%
(2 red AND 5 green)/(any seven marbles)
(10C2 * 10C5)/40C7
This is the number of distinct ways the letters in the word "onomatopoeia" can be arranged.
What is 9,979,200
12P12/(4!*2!) because there are 4 o's and 2 a's
P(red hair) = .13
P(red hair|blue eyes) = .46
P(blue eyes|red hair) = .13
The conclusion that can be drawn regarding whether red hair and blue eyes are independent or dependent.
Dependent.
P(red hair) = .13 and P(red hair|blue eyes) = .46
This is the type of probability being used to determine that there is a 33.3% chance of rolling a number divisible by 3 on a Pentagonal icositetrahedron die.
What is Classical.
BTW Pentagonal icositetrahedron means 24 sides.
A survey was given 100 Wegmans shoppers. The results showed that 73 people come partly because of the atmosphere and 68 appreciate the helpfulness of the employees. 59 of the people who come partly because of the atmosphere also said the appreciate the helpfulness of the employees. This is the probability that some said they come because of the atmosphere or the helpfulness of employees.
What is .82 or 82%
P(atm or help) = P(atm) + P(help) - P(atm & help)
For quality control at an auto manufacturing plant, chassis are tested periodically. To do this, a random chassis from every assembly team is checked.
This is the sampling method being used.
What is stratified.
One from every team.