Portage Learning MATH 110 Introduction to Statistics 2026/2027 – Practice Questions with Answers

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MATH 110 - Introduction
to Statistics Module 5




Exam
Exam Page 1
Suppose that you take a sample of size 50 from a population that is not normally
distributed. Can the sampling distribution of x̄ be approximated by a normal
probability distribution?
Yes, the sample size can be approximated by a normal probablity ditribution
because the sample size is greater than 30.
Answer Key
Suppose that you take a sample of size 50 from a population that is not
normally distributed. Can the sampling distribution of x̄ be approximated by a
normal probability distribution?
Yes. The sample size is greater than 30, therefore, we may approximate by a
normal probability distribution.




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MATH 110chapter-by-chapter
INTRODUCTIONstudy
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,TAGE
MATHLEARNING;
110
Complete
INTRODUCTION
MATH
Study 110
Guide
TO
INTRODUCTION
&STATISTICS
Practice Questions
QUESTIONS
TO STATISTICS
for - PORTAGE
WITHQUESTIONS
PERFECT
LEARNING;
ELABORATED
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MATH
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110SOLUTIONS
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Exam page 3
Suppose that you are attempting to estimate the annual income of 1200
families. In order to use the infinite standard deviation formula, what sample
size, n, should you use?


(n / N ) ≤0.05
N = 1200
n ≤ (0.05 x 1200 ) = 60

n ≤ 60
The sample size (n) has to be less than or equal to 60
n ≤ 60
The sample size (n) has to be less than or equal to 60




Answer Key
Suppose that you are attempting to estimate the annual income of 1200
families. In order to use the infinite standard deviation formula, what sample
size, n, should you use?
In order to use infinite standard deviation formula, we should have:




n≤0.05(1200)
n≤60
So, the sample size should be less than 60.




GE LEARNING;
comprehensive
MATH 110chapter-by-chapter
INTRODUCTIONstudy
TO STATISTICS
guide, practice
QUESTIONS
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PERFECTanswers
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