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
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
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
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
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
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
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