MATH 110 Module 3 Exam (Latest-2025) / MATH110 Introduction to Statistics: Portage Learning

5/28/25, 10:28 PM Math 110 - Module 3 Exam




Math 110 - Introduction to Statistics

Module 3 Exam

Exam Page 1

Question 1: Suppose A and B are two events with probabilities:

P(Ac) = 0.40, P(B) = 0.45, P(A∪B) = 0.60.

a) P(A∩B): 0.45

b) P(A): 0.60

c) P(Bc): 0.55


Exam Page 2

Question 2: 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?

Using the formula for permutations:

P(8,4) = 8! / (8-4)! = 8×7×6×5 = 1680



Exam Page 3

Question 3: Suppose a coin is flipped three times. What is the probability of getting exactly two
heads?

P(2 Heads) = C(3,2) × (0.5)2 × (0.5)1 = 0.375



Exam Page 4



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