Hypothesis Testing - Population Mean, sigma Known; Normal Population or Sample
Sample size
Sample Mean
Population Std Dev
alpha
HYPOTHESIZED Value
200
369
33
0.05
375
n
x-bar
s
(The numerical value in
MATH 221 Statistics for Decision Making
Week 4 iLab
Name: _Dustin Deans_
MATH221
Statistical Concepts:
Probability
Binomial Probability Distribution
Calculating Binomial Probabilities
Open a new Ex
1
MATH 221 Statistics for Decision Making
Week 2 iLab
Name:_Dustin Deans
Statistical Concepts that you will learn after completing this iLab:
Using Excel for Statistics
Graphics
Shapes of Distribut
MATH221: EXCEL TECHNOLOGY TIPS (for Excel 2010 or higher)
BASIC STATISTICS
Excel
(formulas given; arguments would need to be filled in as
well per Excels directions)
Mean
= AVERAGE
Median
= MEDIAN
Mod
MATH 221 Statistics for Decision Making
Week 6 Lab
Name:_Dustin Deans_
Statistical Concepts:
Data Simulation
Confidence Intervals
Normal Probabilities
Short Answer Writing Assignment
All answers sh
Excel CONFIDENCE INTERVAL CALCULATOR
A
1
2
3
4
B
C
D
E
F
G
H
CONFIDENCE INTERVAL CALCULATOR FOR A POPULATION MEAN
n 30
Confidence Level
90%
95%
98%
99%
5
6
7
8
9
10
11
Mean
12
13 ritical value, z-scor
Suppose the mean is 7 & st. dev =2.2.
1. Suppose you want to find P(X<5)
Plug-in 5 where underneath where the x is.
Press enter.
Then you will get P(X<5) =0.1817:
If nothing happens, close the Excel f
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Final Exam Review Questions You should work each of the following on your own, then review the solutions guide. DO NOT look at the solutions guide first. 1. Explain the difference between a population