AdrienneBrown
Exercise6.1
November21,2014
Linear Correlation
In this assignment, you should solve three questions, where you will be asked to calculate a linear correlation
coefficient and determine whether there is a linear correlation between the two gi
Adrienne Brown
November 20, 2014
Exercise 5.1
Title: Inferences from Two Samples
This exercise has the following two tasks:
Task 1: Consider the three samples listed in the table:
A
B
C
1
0
3
3
6
12
5
2
6
5
3
2
Obtain the sample mean and the sample standa
Adrienne Brown
Exercise 4.1
Task 1
Friends, should have more than 5 sources.
Going to be the same, for traditional
P-test could be different
Task 2
Ho= Reject that they are equal
Un-Tar>Fil-Tar
Ho= M1 M2= 0
Df=24
Ta= 1.711
=(21.1=13.2)-
25
=7.9
22.93
25
7
Adrienne Brown
Robert Hudson
Morris Chatman
M. Christiansen
October 16, 2014
Exercise 3.2- Sample Mean Distribution and T-interval
Task 1: Read the following case study, titled Green M&Ms:
Green M&Ms: Consider a class of 20 statistics students, where each
Adrienne Brown
October 16, 2014
Exercise 3.1
Interpreting Confidence Interval
Solve the following:
Task 1
A simple random sample of 40 salaries of NCAA football coaches has a mean of
$415,953 and a standard deviation of $463,364.
X = 415,953
Construct a 9
Adrienne Brown
October 16, 2014
Exercise 3.1
Interpreting Confidence Interval
Solve the following:
Task 2: In a study designed to test the effectiveness of acupuncture for treating
migraine, 142 subjects were treated with acupuncture and 80 subjects were
Adrienne Brown
Exercise 2.1
October 2, 2014
Title-Determining Discrete Probability Distributions
X
0
1
2
3
P (X)
0.22
0.16
0.21
0.13
1. Determine whether or not the data represent a probability distribution.
a. The total add-up to 0.75 it is not a probabi
Adrienne Brown
Exercise 1.1
September 25, 2014
Title: Central Tendency and Measures of Variation
The assessment has the following three tasks:
Task 1: Refer to the Exercises 1.1: Understanding the Concepts and the Skills, Chapter 1, pp. 89, and complete
q
Adrienne Brown
Discussion 1.1 Representing Data Graphically
September 30, 2014
The grades students received on a college Algebra test:
This should be represented by stem and leaf plot because Im organizing the data by the
grades. It would make seeing the