MATH 153 Statistics

Free Samples

MATH 153 Statistics

.cms-body-content table{width:100%!important;} #subhidecontent{ position: relative;
overflow-x: auto;
width: 100%;}

MATH 153 Statistics

0 Download3 Pages / 659 Words

Course Code: MATH153
University: University Of California

MyAssignmentHelp.com is not sponsored or endorsed by this college or university

Country: United States

Question:
Demonstrate Statistical Reasoning in everyday life using real-world data

Answer:
The dependent and independent variables is defined as shown below.
Dependent variable: Percent of low-income working families
Independent variable: Percent of 18-64 years old with no HS diploma  
Scatter plot 
From the above scatterplot, it is apparent that the relationship between the two variables is positive and also it is strong as the deviation of the points from the line of best fit is moderate only. 
Regression equation  
%LIWF = 15.63 + (1.39* percent of 18-64 years old with no HS diploma) 
R square value (From scatter plot) = 0.4960
The value indicates that 49.60% of variation in percent of low-income working families would be explained by variation in percent of 18-64 years old with no HS diploma.  
Correlation coefficient (R) =0.7043 
The correlation coefficient comes out to be positive which indicates that when there is decrease in the percent of 18-64 years old with no high school diploma will no doubt lead to decrease in percent of low-income working families. 
In order to collect a simple random sample of 20 jurisdictions, it makes sense that on a random basis 20 jurisdictions are selected from the given 51 jurisdictions. The data corresponding to these jurisdictions may be taken as the requisite sample data.  
Sample mean and sample standard deviation of percent of low-income working families is computed and is shown below. 
It is unlikely that two sample would produce the same sample mean or standard deviation since all the jurisdictions are different and have dissimilar characteristics with regards to the given variables of interest. 
90% confidence interval
The t value for 90% confidence interval = 1.73
Lower value of 90% confidence interval = Mean – (t value *Standard error)
Upper value of 90% confidence interval = Mean + (t value *Standard error)
Mean = 31.65
Standard error = standard deviation/sqrt (sample size)
Standard deviation = 7.57
Sample size = 20
Standard error = 7.57/sqrt (20) = 1.69
Now,
Lower value of 90% confidence interval = Mean – (t value* Standard error) =31.65 – 1.69 =28.7231
Upper value of 90% confidence interval = Mean + (t value *Standard error) = 31.65 +1.69 = 34.5769
90% confidence interval = [28.7231   34.5769] 
It can be concluded with 90% confidence that average percent of low income working families for all the jurisdictions (i.e. population) lies between 28.72% and 34.57%. 
The interval with lower confidence interval would not be advantageous to the jurisdictions as a lower confidence interval would be even narrower and therefore lesser jurisdictions would be eligible for federal funds. It would be in the best interest of the jurisdictions that a higher confidence interval is considered which would ensure that more jurisdictions are included. 
The reporting of research results for obtaining of Federal aid for the concerned jurisdiction would amount of misuse of statistics as the results would be biased and hence would not be valid. It makes sense that the research results should be obtained by a team which comprises of the representation from different jurisdictions selected at random so as to minimise jurisdiction based bias. 
Hypothesized population mean =31.3%
Sample mean =29.8%
Sample size = 16
Sample standard deviation = 4.1%
One sample t test is considered appropriate test for testing the claim.
Assumption
Sample data follows normal distribution
Population is normally distributed
Variable which has been measured would be wither ration or interval
Sample should be randomly selected 
Hypothesis testing
Null hypothesis H0:  i.e. the average percent of low-income working families in 2014 does not differ from the corresponding value in 2011.
Alternative hypothesis Ha  i.e. the average percent of low-income working families in 2014 is lower than the corresponding value in 2011. 
Test statistic (z score, t score)
Sample size = 16
Sample proportion = 29.8%
Sample standard deviation = 4.1% 
The t score = -1.463
Degree of freedom = 16-1 = 15 
The p value corresponding to t score and degree of freedom = 0.09
Level of significance = 0.10
It can be seen from the above that p value is lower than level of significance and hence, sufficient evidence is present to reject the null hypothesis and to accept the alternative hypothesis. 
The conclusion can be made that national average percent of low-income working families has improved since 2011.

Free Membership to World’s Largest Sample Bank

To View this & another 50000+ free samples. Please put
your valid email id.

E-mail

Yes, alert me for offers and important updates

Submit 

Download Sample Now

Earn back the money you have spent on the downloaded sample by uploading a unique assignment/study material/research material you have. After we assess the authenticity of the uploaded content, you will get 100% money back in your wallet within 7 days.

UploadUnique Document

DocumentUnder Evaluation

Get Moneyinto Your Wallet

Total 3 pages

PAY 2 USD TO DOWNLOAD

*The content must not be available online or in our existing Database to qualify as
unique.

Cite This Work
To export a reference to this article please select a referencing stye below:

APA
MLA
Harvard
OSCOLA
Vancouver

My Assignment Help. (2021). MATH 153 Statistics. Retrieved from https://myassignmenthelp.com/free-samples/math153-statistics/standard-deviation.html.

“MATH 153 Statistics.” My Assignment Help, 2021, https://myassignmenthelp.com/free-samples/math153-statistics/standard-deviation.html.

My Assignment Help (2021) MATH 153 Statistics [Online]. Available from: https://myassignmenthelp.com/free-samples/math153-statistics/standard-deviation.html[Accessed 18 December 2021].

My Assignment Help. ‘MATH 153 Statistics’ (My Assignment Help, 2021) accessed 18 December 2021.

My Assignment Help. MATH 153 Statistics [Internet]. My Assignment Help. 2021 [cited 18 December 2021]. Available from: https://myassignmenthelp.com/free-samples/math153-statistics/standard-deviation.html.

×
.close{position: absolute;right: 5px;z-index: 999;opacity: 1;color: #ff8b00;}

×

Thank you for your interest
The respective sample has been mail to your register email id

×

CONGRATS!
$20 Credited
successfully in your wallet.
* $5 to be used on order value more than $50. Valid for
only 1
month.

Account created successfully!
We have sent login details on your registered email.

User:

Password:

If you are unfamiliar with the different referencing styles, you can visit MyAssignmenthelp.com to get access to the MLA citation machine and APA citation machine. You just have to provide details like the name of the publisher, the name of the author, and the list will be ready for you in a matter of minutes. Apart from MLA and APA citation tools, we also have a Chicago citation generator. The free citation machine is applicable for books, websites, journals and many more resources.

Latest Management Samples

div#loaddata .card img {max-width: 100%;
}

MPM755 Building Success In Commerce
Download :
0 | Pages :
9

Course Code: MPM755
University: Deakin University

MyAssignmentHelp.com is not sponsored or endorsed by this college or university

Country: Australia

Answers:
Introduction
The process of developing a successful business entity requires a multidimensional analysis of several factors that relate to the internal and external environment in commerce. The areas covered in this current unit are essential in transforming the business perspective regarding the key commerce factors such as ethics, technology, culture, entrepreneurship, leadership, culture, and globalization (Nzelibe, 1996; Barza, 2…
Read
More

SNM660 Evidence Based Practice
Download :
0 | Pages :
8

Course Code: SNM660
University: The University Of Sheffield

MyAssignmentHelp.com is not sponsored or endorsed by this college or university

Country: United Kingdom

Answers:
Critical reflection on the objective, design, methodology and outcome of the research undertaken Assessment-I
Smoking and tobacco addiction is one of the few among the most basic general restorative issues, particularly to developed nations such as the UK. It has been represented that among all risk segments smoking is the fourth driving purpose behind infections and other several ailments like asthma, breathing and problems in the l…
Read
More
Tags:
Australia Maidstone Management Business management with marketing University of New South Wales Masters in Business Administration 

BSBHRM513 Manage Workforce Planning
Download :
0 | Pages :
20

Course Code: BSBHRM513
University: Tafe NSW

MyAssignmentHelp.com is not sponsored or endorsed by this college or university

Country: Australia

Answer:
Task 1
1.0 Data on staff turnover and demographics
That includes the staffing information of JKL industries for the fiscal year of 2014-15, it can be said that the company is having problems related to employee turnover. For the role of Senior Manager in Sydney, the organization needs 4 managers; however, one manager is exiting. It will make one empty position which might hurt the decision making process. On the other hand, In Brisba…
Read
More

MKT2031 Issues In Small Business And Entrepreneurship
Download :
0 | Pages :
5

Course Code: MKT2031
University: University Of Northampton

MyAssignmentHelp.com is not sponsored or endorsed by this college or university

Country: United Kingdom

Answer:
Entrepreneurial ventures
Entrepreneurship is the capacity and willingness to develop, manage, and put in order operations of any business venture with an intention to make profits despite the risks that may be involved in such venture. Small and large businesses have a vital role to play in the overall performance of the economy. It is, therefore, necessary to consider the difference between entrepreneurial ventures, individual, and c…
Read
More
Tags:
Turkey Istanbul Management University of Employee Masters in Business Administration 

MN506 System Management
Download :
0 | Pages :
7

Course Code: MN506
University: Melbourne Institute Of Technology

MyAssignmentHelp.com is not sponsored or endorsed by this college or university

Country: Australia

Answer:
Introduction
An operating system (OS) is defined as a system software that is installed in the systems for the management of the hardware along with the other software resources. Every computer system and mobile device requires an operating system for functioning and execution of operations. There is a great use of mobile devices such as tablets and Smartphones that has increased. One of the widely used and implemented operating syste…
Read
More
Tags:
Australia Cheltenham Computer Science Litigation and Dispute Management University of New South Wales Information Technology 

Next