MATH 110 Statistics Module 4 Exam,
Portage Learning
, This attempt took 84 minutes.
Question 1
pts
You may find the following files helpful throughout
the exam: Statistics_Equation_Sheet
(Links to an external
site.) Standard Normal
Table
(Links to an external site.)
In a large shipment of clocks, it has been discovered that
15 % of the clocks are defective. Suppose that you
choose 9 clocks at random. What is the probability
exactly 2 of the clocks are defective.
Your Answer:
n=9 x=2 p=.15
f(x)=
n
!
x
!
(
n
−
x
)
!
px(1-p)(n-x) = 9!/2!(9-2)! multiply .152(1-.15)(9-2) =.2597
Portage Learning
, This attempt took 84 minutes.
Question 1
pts
You may find the following files helpful throughout
the exam: Statistics_Equation_Sheet
(Links to an external
site.) Standard Normal
Table
(Links to an external site.)
In a large shipment of clocks, it has been discovered that
15 % of the clocks are defective. Suppose that you
choose 9 clocks at random. What is the probability
exactly 2 of the clocks are defective.
Your Answer:
n=9 x=2 p=.15
f(x)=
n
!
x
!
(
n
−
x
)
!
px(1-p)(n-x) = 9!/2!(9-2)! multiply .152(1-.15)(9-2) =.2597
