Task1:Considerthethreesampleslistedinthetable:
A
B
C
1
0
3
3
6
12
5
2
6
5
3
2
Obtainthesamplemeanandthesamplestandarddeviationofeachofthethreesamples.
Samplemean
Samplestandarddeviation
A
1+3+5=9/3=3
2
B
0+6+2+5+2=15/5=3
2.45
C
3+12+6+3=24/4=6
4.24
Obtain
Teesha Magana
Examine the given statement:
o The proportion of people aged 1825 who currently use illicit drugs is equal to 0.20 (or 20%).
Express the null hypothesis H0 and the alternative hypothesis H1 in symbolic form. Be sure to
use the correct symbol
Teesha Magana
Task 1:
A. 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 for a
hypothesis test of the claim that the proportion
Teesha Magana
Task 1: Refer to the Exercises 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: Dene the following terms:
a. Population = The collection of all individuals or items und
Green M&Ms and Diamond Pricing
Will Valdez
ITT Technical Institute
Task 1: Read the following case study, titled Green M&Ms:
Green M&Ms: Consider a class of 20 statistics students, where each student is
given 5 small bags of M&Ms and asked to count the nu
Teesha Magana
Module 5 Exercise 2
1. What is the population under consideration?
A: The population under consideration are the first 44 U.S. Presidents.
2. What are the two variables under consideration?
A: The two variables under consideration are the re
Task 1
CBS
Fox
ABC
Fox
CBS
ABC
FOX
ABC
CBS
CBS
Fox
CBS
CBS
CBS
CBS
ABC
Fox
CBS
Fox
ABC
CBS
Fox
ABC
9
5
6
30%
4 5%
25%
CBS
ABC
FOX
I believe that the most appropriate graph for this representation of data would be the pie chart. If there was more data to m
Teesha Magana
1. In the table below, the random variable x represents the number of cups or cans of
caffeinated beverages consumed by Americans each day, based on data from the National
Sleep Foundation.
x P(x)
0 0.22
1 0.16
2 0.21
3 0.16
Determine whethe
Teesha Magana
A simple random sample of 40 salaries of NCAA football coaches has a mean of $415,953 and
a standard deviation of $463,364. Construct a 95% confidence interval estimate of the mean
salary of an NCAA football coach.
N= 40
X= 415953
= 463364
a. Obtain and interpret a point estimate for the mean number of chocolate chips per bag for all bags of Chips
Ahoy! Cookies.
First thing is first and that is that you have to add up all of the data provided. That comes to 52986.
Next, to find the point es
Interpreting the Confidence Interval
Will Valdez
ITT Technical Institute
Interpreting the Confidence Interval
A simple random sample of 40 salaries of NCAA football coaches has a mean of
$415,953 and a standard deviation of $463,364.
Construct a 95% confi
Inferences from Two Proportions and Samples
Will Valdez
ITT Technical Institute
Inferences from Two Proportions and Samples
Task 1: Solve the following problems: A student of the author surveyed her
friends and found that among 20 males, 4 smoke and among
Olivier Mukendi
MA3110_Statistics
8/23/2015
Module 6: Exercise 6.1 Linear Correlation
The obtained scatter plot is given below,
The computed correlation coefficient between these two variables is 0.8717 and the critical value
from the table is 0.754.
As t