MATH 110 Module 3 Statistics Exam Questions and Answers- Portage Learning

Attempt Time Score
LATEST Attempt 1 90 minutes 42 out of 50


Score for this quiz: 42 out of 50
Submitted May 23 at 12:43am
This attempt took 90 minutes.

Question 1
pts
You may find the following files helpful throughout the exam:
Statistics_Equation_Sheet
(Links to an external site.)

Find the answer to each of the following by first reducing the
fractions as much as possible:

a) P(412,3)=

b) C(587,585)=

Your Answer:
a) Permutation
P(n,r)=n!/(n-r)!
P(412,3)= 412/(412-3)!=412!/409= 412(411)(410)=69,426,120
b) Combination
C(n,r)=n!/r!(n-r)!
C(587,585)= 587/585!(587-585)= 587!/585!582!= 587(586)/
2(1)=171,991

, a.




b.




Question 2
pts
You may find the following files helpful throughout the exam:
Statistics_Equation_Sheet
(Links to an external site.)

Suppose you are going to make a password that consists of 4
characters chosen from {2,7,8,c,f,k,t,z}. How many different
passwords can you make if you cannot use any character more
than once in each password?
Your Answer:
P(n,r)=n!/(n-r)!
p(8,4)= 8!/(8-4)! =8!/4 = 8(7)(6)(5)=1,680




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