Study Guide
Two Way Tables
Random
or
Independence
100
The two way table represents the survey results of how employees of a company with offices in Austin TX and Copenhagen Denmark get to work.
If an employee that walks to work is chosen at random, what is the true probability they are in Austin office?
.568
100
Find the probability that the bottle picked at random is a Diet Coke (3 decimals)
0.333
100
When was Higi's birthday?
October 26
100
What is the probability that the light bulb is green or OK? (3 decimals)
0.750
100
Determine whether the events "location 2" and "glass" are independent. Explain your reasoning.
Not independent because they occur at the same time and they intersect.
200
The table shows the raw data of a survey about the resting heart rate in beats per minute (bpm), for 200 college students who are not in the marching band.
Find P( above 80 bpm | in marching band).
.333
200
If the bulb is defective, what is the probability that it is red? (3 decimals)
0.625
200
How many animals does Higi have?
+100 for the correct name(s)
1 french bulldog: Butterscotch
3 snakes: Shoelace, Eggnog, Boba
200
What is the probability that it is either plastic or metal? (3 decimals)
0.600
200
Determine whether the events "water" and "soda" are independent. Explain your reasoning.
Independent because they do not intersect and do not occur at the same time.
300
A survey of middle school students asked: What is your favorite winter sport? Using these 545 students as the sample space, a student from this study is randomly selected.
If the student selected is an 6th grade student, what is the probability that the student prefers snowboarding or ice-skating?
0.735
300
Given that the bottle is a diet drink, find the probability that the bottle is a Coke. (3 decimals)
0.643
300
What does the fox say?
*Non-sensical gibberish like a fox*
300
What is the probability that it is either cardboard or at location 2? (3 decimals)
0.532
300
Determine whether the events "morning" and "evening" are independent. Explain your reasoning.
Independent because they do not intersect and they do not occur at the same time.
400
The two way table represents the survey results of how employees of a company with offices in Austin TX and Copenhagen Denmark get to work.
Is this statement true?
P( Austin | public transit) < P ( Austin | bike )
false
.568 < .190
400
A class has 100 students, 70 of which are boys. 70% of the boys are involved in sports, while 40% of the girls are involved in sports. Make a chart.
400
When are office hours?
Monday & Wednesday 3:30-4
400
What is the probability that it is either at location 3 or 4? (3 decimals)
0.500
400
Determine whether the events "version 2" and "likely to buy" are independent. Explain your reasoning.
Not independent because they can occur at the same time and they intersect.
500
The two-way table summarizes whether or not a softball team had practice when it was raining and when it was not raining at the start of the day.
Is this statement true?
P( raining | softball practice) > P( not raining | no softball practice)
false
.25 > .75
500
In a certain college, a quarter of the boys and 10% of the girls are on scholarships. The girls constitute 60% of the student body which is total 100 students. Make a chart.
500
Where did Higi go to college?
CSU - Dominguez Hills &
Marymount California University
(it closed down 2 years ago)
500
*Daily Double*
Finish this two-way table. Find the probability that someone drinks tea or is a child. (3 decimals)
0.871
500
Determine whether the events "high top sneakers" and "low top sneakers" are independent. Explain your reasoning.
Independent because they do not intersect and they do not occur at the same time.