Question 13 of 20
1.0/ 1.0 Points
The random variable X = the number of vehicles owned. Find the probability that a person owns
less than 2 vehicles. Round to two decimal places.
x
0
1
2
3
4
P(X
=
x
)
0.1 0.35 0.25 0.2 0.1

Answer Key:0.45|.45
Feedback:
Less than 2 is P(x = 0) + P(x = 1)
.1 + .35
Part 5 of 6 - Poisson Distribution Knowledge Check Practice
3.0/ 5.0 Points
Question 14 of 20
0.0/ 1.0 Points
A bank gets an average of 8 customers per hour. Assume the variable follows a Poisson
distribution. Find the probability that there will be 11 customers at this bank in one hour. (That

Question 15 of 20
1.0/ 1.0 Points
A coffee shop serves an average of 75 customers per hour during the morning rush. Find the
probability that 80 customers arrive in an hour during tomorrow’s morning rush. Round answer

Question 16 of 20
0.0/ 1.0 Points
A bank gets an average of 12 customers per hour. Assume the variable follows a Poisson
distribution. Find the probability that there will be 10 or more customers at this bank in one hour.

=1-POISSON.DIST(9,12,TRUE)
Question 17 of 20
1.0/ 1.0 Points
The mean number of visitors at a national park in one weekend is 47. Assume the variable
follows a Poisson distribution. Find the probability that there will be at most 55 visitors at this

Question 18 of 20
1.0/ 1.0 Points
There are 4 accidents, on average, at an intersection. Assume the variable follows a Poisson
distribution. Find the probability that there will be 5 or less accidents at this intersection. (That

Part 6 of 6 - Probability Knowledge Check Practice
2.0/ 2.0 Points
Question 19 of 20
1.0/ 1.0 Points
What type of probability uses sample spaces to determine the numerical probability that an event
will occur?

B.
subjective probability
C.
empirical probability
D.
conditional probability
Answer Key:A
Question 20 of 20
1.0/ 1.0 Points
Three cards are drawn from a deck without replacement. What is the probability that all three
cards are clubs?

C.
0.0156
D.
0.0129
Answer Key:D
Feedback:
13 cubs out of a standard 52 card deck
=(13/52)*(12/51)*(11/50)