Module 3 Homework Assignment
1. Determine whether the hypothesis test involves a sampling distribution of means that is a normal
distribution, Student t distribution or neither. The sample data appear to come from a normally
distributed population with =
Module 2 Homework Assignment
1.) 459 randomly selected light bulbs were tested in a laboratory, 291 lasted more than 500 hours.
Find a point estimate of the true proportion of all light bulbs that last more than 500 hours.
Solution:
Point Estimate=0.63
29
Running head: STATISTICS PROJECT
1
Charles W Carmack
Statistics Project
Rasmussen College
2016
Running head: STATISTICS PROJECT
2
Statistics Project
A client is seeking to obtain an analysis of the salary distribution of the jobs in the
state of Minnesota
1. The data contains of the different job types in a particular region Minnesota. It tells us about the
salary of each job type annually. The purpose of this research is to understand the salary
distribution for various kinds of jobs. The data contains of
Module 6 Homework Assignment
1. Determine whether the samples are independent or dependent.
The effectiveness of a new headache medicine is tested by measuring the amount of time before the
headache is cured for patients who use the medicine and another g
Module 4 Homework Assignment
1. A researcher claims that 62% of voters favor gun control. State the null hypothesis and
the alternative hypothesis in words.
Solution:
The claim is that 62% of voters favor gun
control. This claim contains "=" sign so this
Module 3 Homework Assignment
1. Find the critical value
L2
corresponding to a sample size of 19 and a confidence level of 99%.
Solution:
Right: 37.156
2.Find the critical value
Instructor Comments:
R2
corresponding to a sample size of 19 and a confidenc
Module 7 Homework Assignment
Use the traditional method of hypothesis testing to test the given claim about the means of two
populations. Assume that two dependent samples have been randomly selected from normally
distributed populations.
Five students to
Module 9 Homework Assignment
The paired data below consists of test scores and hours of preparation for 5 randomly selected students.
x Hours of preparation 5 2 9 6 10
y Test score
64 48 72 73 80
1. Use the given data and MS Excel and find the correlation
Module 10 Homework Assignment
An investigator analyzed the leading digits of the amounts from 200 checks issued by three suspect
companies. The frequencies were found to be 68, 40, 18, 19, 8, 20, 6, 9, 12 and those digits correspond
to the leading digits
Module 5 Homework Assignment
1. Find the critical value or values of 2 based on the given information. H1: > 26.1, n = 9, = 0.01
Solution:
20.090
Instructor Comments:
2. Test the claim that for the adult population of one town, the mean annual salary is g
Module 4 Homework Assignment
GRADE: 18/20
1. A researcher claims that 62% of voters favor gun control. State the null hypothesis and
the alternative hypothesis in words.
Solution:
Null Hypothesis: A researcher claims that 62% of
voters favor gun control.
Module 2 Homework Assignment
1. 459 randomly selected light bulbs were tested in a laboratory, 291 lasted more than 500 hours. Find a
point estimate of the true proportion of all light bulbs that last more than 500 hours.
Solution:
x
^p=
n
Instructor Comm
Running Head: Phase 2
1
Charles Carmack
Phase 2
Rasmussen College
2016
Running Head: Phase 2
2
Question 1
Statistics is all about data and getting information regarding the population. But most
often its not possible to collected the data from the complet
Inferential Statistics and Analytics
Discussion on Dependent Samples: Freshman 15
The freshman 15 refers to the urban legend that students gain an average of 15 pounds during their
freshman year of college. The weights of 100 freshmen at a certain Univers
This week you will begin working on Phase 3 of your course project. Using the same data set and
variables for your selected topic, add the following information to your analysis:
1. Discuss the process for hypothesis testing.
Discuss the 8 steps of hypoth
You are provided with two options for your course project below. Select ONE of the options
below for your analysis.
Option 1 allows you to analyze job salaries for the state of Minnesota.
Option 1 Scenario
Option 1 Data Set
Option 2 allows you to analyze
Module 2 Homework Assignment
1. 459 randomly selected light bulbs were tested in a laboratory, 291 lasted more than 500 hours. Find a
point estimate of the true proportion of all light bulbs that last more than 500 hours.
Solution: 459 is n, because they
Module 9 Homework Assignment
The paired data below consists of test scores and hours of preparation for 5 randomly selected students.
x Hours of preparation 5 2 9 6 10
y Test score
64 48 72 73 80
1. Use the given data and MS Excel and find the correlation
Module 7 Homework Assignment
Use the traditional method of hypothesis testing to test the given claim about the means of two
populations. Assume that two dependent samples have been randomly selected from normally
distributed populations.
Five students to
Module 6 Homework Assignment
1. Determine whether the samples are independent or dependent.
The effectiveness of a new headache medicine is tested by measuring the amount of time before the
headache is cured for patients who use the medicine and another g
Module 5 Homework Assignment
1. Find the critical value or values of 2 based on the given information. H1: > 26.1, n = 9, = 0.01
Solution:
20.090
Instructor Comments:
2. Test the claim that for the adult population of one town, the mean annual salary is g
Module 3 Homework Assignment
1. Find the critical value
Solution:
6.256
2. Find the critical value
L2
corresponding to a sample size of 19 and a confidence level of 99%.
Instructor Comments:
R2
corresponding to a sample size of 19 and a confidence level