OG Probability
Venn Diagram
Geometric
Binomial
OG Probability
100
Match each number to the probability of each event occurring:
0 .5 1
Not playing soccer but still winning a game.
The moon will come out tomorrow night.
Drawing a red card from a shuffled deck of cards.
1. 0
2. 1
3. .5
100
What is the probability that someone drinks pepsi or coke?
.86, 114 + 56 + 174 = 344. 344/400 = .86
100
Suppose X has a geometric distribution with p = 0.7 Graph p(x) for x = 1, 2, 3, 4
Geometpdf(0.7, 4)= .0189
100
Suppose it is known that 80% of the people exposed to the covid will contract the virus. Out of a family of six exposed to the virus, what is the probability that:
a) Exactly 4 will get covid?
.24576 (6,.8,4)
100
The central angle of sector P is 60°. What is the probability that the spinner lands on P?
Since all the pieces in the circle are all 60 degrees. The whole circle is 360 degrees. The probability of landing on a P is ⅙.
200
If the Forcast say there is a 70% of rain for the next 5 days, What is the probability that it will never rain.
.3^5= .0024
200
100 fast-food eaters were surveyed on their preferred fast food place, being given three options: Burger King, Chick-Fil-A, and McDonalds. They could choose all three, or any combination of the three, including just one.They could not, however, say they did not eat fast food. What is the probability that a fast-food-eater liked only Chick-Fil-A or Burger King?
200
The products of machine has a 4% chance of defect in a product. What probability the 1st defect happens in the fifth product?
Geometpdf( .03, 4) = .02738019
200
Suppose a pipe in town broke and the water is infected. 90% percent of the people who drink the water will get very sick. If group of 10 people drink the water, what is the probability that:
Exactly 5 get sick?
.0015
(10,.9.5)
200
At a stop sign, 62% of cars do not completely stop. Out of 3 people what is the probability that atlest 2 cars do not stop completely at the stop sign.
(.62)(.62)(.38)=.146
(.62)^3= .238
.146+.238= .384
300
87% of students at a high school get to school on time. If 3 students are chosen at random, what is the probability that exactly one of them is late?
(.13)(.87)(.87)= .0983
300
400 people were surveyed on whether they drink pepsi or coke. What is the probability that someone drinks coke?
56 do not drink either
answer: .575, 174 + 56 = 230. 230/400 = .575
300
A restaurant found that 43% of customers choose to have french fries as there side dish while 34% choose mash potatoes. What is the probability that a customer chooses neither as there side?
33% of people choose neither as there side dish .43+.34=.77 1-.77=.33
400
A pet shop asked its customers the pets they own, 42% said they own dogs while 36% said they own cats and, 22% said they owned fish. What is the probability of five of the customers owning fish.
(.22)^5 = .000515 is the probability of five customers owning fish.
400
A high school took a survey to see what sport students where apart of.
Football-.24
Soccer-.20
Hockey-.19
Track-.36
None-?
Find the amount of people who are apart of no sports and explain why and why not the information is legitimate.
1-.97= .03 percent of students did not take a sport and the data is legitimate since all the percentages equal 1.