MA3110 Statistics
David Baugh
Exercise 4.1
Task 1 Solve the following problems
A student of the author surveyed her friends and found that among 20 males, 4 smoke and
Among 30 female friends, 6 smoke. Give two reasons why these results should not be used
Ma3110 Statistics
David Baugh
Exercise 3.1
Construct a 95% confidence interval estimate of the mean salary of an NCAA football coach.
Mean of 415,953
Standard deviation of 463,364.
X=
n=40
X= 415953
J= 463364
= 0.05
/2 =0.025
Z 0.025 = 1.92
E=z or/z (j/n)
Jacob Long
1/29/2015
MA3110: Statistics_V4.0
Module 3 exercise 1
Part 1:
95% confidence interval of the mean salary of an NCAA football coach
Mean=415,953
Standard deviation=463,364
N=40
Interval= 1-.95=.05/2=.025=1.96
Calculation= 1.96*(463,364/40)=143,5
Nerine Watts
MA3110
9/28/2015
Exercise 2.2 Data Representation and Binomial Probability
Task 1: Use the following data:
CBS
ABC
Fox
CBS
ABC
CBS
Fox
Fox
CBS
CBS
CBS
CBS
ABC
Fox
CBS
Fox
ABC
CBS
Fox
ABC
Create two graphs. One graph should be a bar chart and
Jacob Long
MA3110:Statistics_V4.0
Module 3 Exercise 2
Task 1
A. Find the sample means for each students green M&M count.
Student 1: 6.8
Student 2: 11
Student 3: 12.4
Student 4: 11.2
Student 5: 12
Student 6: 9.8
Student 7: 10
Student 8: 8
Student 9: 11.2
S
MA3110: Module 5 Chi Square and Anova
Exercise 5.2
Chi Square Procedures
What is the population under consideration?
The Presidents of the US.
What are the two variables under consideration?
The two variables under consideration are the region of birth an
David Baugh
MA3110 Statistics
Exercise 1
Task 1
Exercise 1.1 Understanding the concepts and the skills chapter 1 pp. 8-9, and complete questions 1.1,
1.7, 1.14, and 1.17.
1.1 Define the following terms:
a. Population A population is a summation of all the
Jacob Long
MA3110: Statistics
Module 2 Exercise 2
Task 1
Friday
Thursday
ABC
CBS
FOX
Wednesday
Tuesday
Monday
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
ABC
CBS
FOX
I think the bar graph is the best representation of this data. It breaks down the information into
view
MA3110 Statistics
David Baugh
Exercise 4.2 Title: Hypothesis Testing
1.
For this problem I used Fig. 8-2 on pg 410.
Claim: the proportion of people aged 18-25 who currently use illicit drugs is equal to .20
P=.20
If p=.20 is false, then p.20
Because of th
Chapter 8
Rachel and Matthew took a walk on her day off to see the new home that the Adams
family was moving into. Matthew was obviously upset, due to the fact that he wouldnt be
watching their house every night at dusk anymore. This also meant that he wo
Solve the following problems:
Listed below are baseball team statistics, consisting of the proportions of wins and the result of this
difference: Difference (number of runs scored) - (number of runs allowed). The statistics are from a recent
year, and th
MA3110 Statistics
DavidBaugh
Exercise 5.1
Title: Inferences from two samples.
Task 1 Consider the samples listed in the table
A
1
3
5
B
0
6
2
5
2
C
3
12
6
3
Obtain the sample mean and the sample deviation of each of the three samples:
A= 1, 3, 5 Sample me
Read the following information and answer the corresponding questions:
The following table contains data of region of birth and political party of the first 44 U.S. presidents. The
table uses these abbreviations: F = Federalist, DR = Democratic-Republican
Ma3110
Jacob P. Long
ITT Tech
1.1a. Population is the total number of persons inhabiting a country, city, or any district or area.
1.1b. Sample is a small part of anything or one of a number, intended to show the quality, style,
or nature of the whole; sp
dkataky@comcast.net
651-485-8307
Chapter 1: the Nature of Statistics
Statistics:
1. Measure of data
2. The science of organizing & summarizing numerical information; Also, the science of probability
& prediction based on numerical info.
Statistics Basics:
dkataky@comcast.net
651-485-8307
10/05/2015
Pg. 219
Discrete = Binomial
Continuous = Nomial
Chapter 5: Discrete Random Variables & Probability Distributions
(Probability Distribution = Prediction of an event)
5.5: Mean & Standard Deviation of a Discrete R
MA3110: Module 1 Introduction to Statistics
Consider the following data sets:
A collection of how many minutes someone spends online in a day
The number of students that said yes or no to whether or not they have a Facebook account
The number of children
Task 1: Consider the three samples listed in the table:
A
1
3
5
B
0
6
2
5
2
C
3
12
6
3
Obtain the sample mean and the sample standard deviation of each of the three samples.
A
C
3
3
6
2
2.45
4.44
Sample
Size
B
3
5
4
Obtain total sum of squares (SST,) trea
MA3110 Statistics
David Baugh
Title Chi Square Procedures
The following table contains data of region of birth and political party of the first 44 U.S.
presidents.
F= Federalist
DR= Democratic
Republican
D= Democratic
W= Whig
R= Republican
U=Union
NE=Nort
MA3110 Statistics
David Baugh
Exercise 2.2
Task 1
The bar chart is great for this kind of data expression. I can clearly
see that CBS name has shown up more frequently and I think that this
is the best way to visual express that data.
Task 2
The experimen
Jacob Long
1/29/2015
MA3110: Statistics
Module 3 exercise 1
Part 1:
95% confidence interval of the mean salary of an NCAA football coach
Mean=415,953
Standard deviation=463,364
N=40
Interval= 1-.95=.05/2=.025=1.96
Calculation= 1.96*(463,364/40)=143,598 (r
Jacob Long
MA3110: Statistics
Module 5: Exercise 1
Task 1
Sample Mean of sample A: 3
Sample Standard Deviation of sample A: 1.633
Sample Mean of sample B: 3
Sample Standard Deviation of sample B: 2.191
Sample mean of sample C: 6
Sample Standard Deviation
Jacob Long
MA3110: Statistics
Module 5 Exercise 2
1. What is the population under consideration? Presidents of the United States of America
2. What are the two variables under consideration? Birth region and party
3. Group the bivariate data for the varia
MA3110
Jacob P. Long
ITT Tech
1.1a. Population is the total number of persons inhabiting a country, city, or any district or area.
1.1b. Sample is a small part of anything or one of a number, intended to show the quality, style,
or nature of the whole; sp