Loading...

Messages

Proposals

Stuck in your homework and missing deadline? Get urgent help in $10/Page with 24 hours deadline

Get Urgent Writing Help In Your Essays, Assignments, Homeworks, Dissertation, Thesis Or Coursework & Achieve A+ Grades.

Privacy Guaranteed - 100% Plagiarism Free Writing - Free Turnitin Report - Professional And Experienced Writers - 24/7 Online Support

Data analysis descriptive statistics excel mac

23/11/2021 Client: muhammad11 Deadline: 2 Day

ANALYZING MEAN

INTRODUCTION: Two indispensable statistical decision-making tools for a single

parameter are

(i) Confidence intervals

(ii) Hypothesis tests to investigate theories about parameters.

KNOWN SIGMA

CONFIDENCE INTERVALS

As an introduction, let’s follow Example 8.4 in your text.

image1.png image2.png

Begin a new worksheet and generate 40 random integers the range 0 to 9 in column A. Use the Random Number Generation tool of Excel and then use the INT (integer) function to transform to integers in the range 0 to 9:

Choose: Data > Data Analysis > Random Number Generation > OK

Enter: Number of Variables: 1

Number of Random Numbers: 40

Select: Distribution: Uniform

Enter: Parameters, Between 0 and 10

Output Range: B1 > OK

Enter: in cell A1: =INT(B1)

Click and drag: lower right corner to cell A40

To see the mean, standard deviation and maximum and minimum values for the data set use: Select: Data > Data Analysis > Descriptive Statistics > OK

Enter input and output range as appropriate, and select Summary Statistics

Find the 90% confidence interval for the mean of these values we generate in column A: Choose: Data > Data Analysis Plus** > Z-Estimate: Mean > OK

Enter: Input Range: A1:A40

Standard Deviation (SIGMA): 2.87 > OK

Alpha: .10 > OK

So the 90% confidence interval for the mean is image3.jpg to image4.jpg . ** If “Data Analysis Plus” does not show on the File menu:

Save and Close your excel file

Open: http://www.kellerstatistics.com/KellerStatistics/DataAnalysisPlus Click on: “Download DAPv9” bottom (Mac or Windows)

Save the file > Extract it > open it > double click on Excel file:“Stats_2007-2013_v9b” > Click on “Enable Macros” > Find “Data Analysis Plus” in “Add-Ins” at the menu toolbar of present Excel file > Reopen your previous excel file by dragging inside of present Excel file.

HYPOTHESIS TESTING

A standard final examination in an elementary statistics course is designed to produce a mean score of 75 and a standard deviation of 12. The hypothesis you will try to verify is: "This particular statistics class is above average." At the .05 level of significance, test the claim that the following sample scores reflect an above-average class (assuming sigma = 12):

79 79 78 74 82 89 74 75 78 73 74 84 82 66 84 82 82 71 72 83

Test the hypothesis, "The mean test grade for this class is greater than 75." Choose: Add-Ins > Data Analysis Plus > Z-Test: Mean > OK

Enter: Input Range: A1:A20 or select cells > OK

Hypothesized mean: 75

Standard Deviation (SIGMA): 12 > OK

Alpha: .05 > OK

Questions:

1. What are the formal null and alternative hypotheses?

2. What is the value of the test statistic, and what is your decision? Is the mean of this class above “average”?

UNKNOWN SIGMA

THE CONFIDENCE INTERVAL

To generate a confidence interval using the t-statistic we use Inference about a Mean command, specifying the level of confidence and the column of data for which the estimation is being made.

image5.png

Consider the data presented in exercise 9.31[EX09-031] of your text. Open the data file. Before we complete a 95% confidence interval estimate for the mean length of lunch breaks

at Giant Mart, we check the normal probability plot and boxplot to verify the normality assumption.

Excel uses a test for normality (Chi-Squared Test of Normality), not the probability plot. Choose: Add-Ins > Data Analysis Plus > Chi-Squared Test of Normality > OK

Enter: Input Range: select cells

Select: Labels (if column heading was used) > OK

** IF P-value greater the .05, given distribution is approximately normal.

To complete a 95% confidence interval estimate for the mean length of lunch breaks at Giant Mart complete the following steps:

Choose: Add-Ins > Data Analysis Plus > t-Estimate: Mean > OK

Enter: Input Range: A1:A22

Enter: Alpha: .05 > OK

With 95% confidence we estimate the mean length of lunch breaks at Giant Mart to be between image6.jpg and image7.jpg minutes.

THE T TEST

image8.png

Using text exercise 9.29 [EX02-177] as the basis of our discussion, open the data file. Suppose we have been asked to determine whether this accelerator has decreased the drying time by significantly more than 4% at the 0.01 level.

To perform the test, use the following commands:

Choose: Add-Ins > Data Analysis Plus > t-Test Mean > OK

Enter: Input Range: A2:A9 > OK

Hypothesized mean: 4 Alpha: 0.01 > OK

Question:

3. What are the formal null and alternative hypotheses?

4. Is there sufficient evidence to show that this accelerator has decreased the drying time significantly more than 4% at the .01 level?

Homework is Completed By:

Writer Writer Name Amount Client Comments & Rating
Instant Homework Helper

ONLINE

Instant Homework Helper

$36

She helped me in last minute in a very reasonable price. She is a lifesaver, I got A+ grade in my homework, I will surely hire her again for my next assignments, Thumbs Up!

Order & Get This Solution Within 3 Hours in $25/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 3 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 6 Hours in $20/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 6 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 12 Hours in $15/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 12 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

6 writers have sent their proposals to do this homework:

Write My Coursework
Math Guru
Top Class Results
Assignment Helper
Accounting & Finance Mentor
Helping Hand
Writer Writer Name Offer Chat
Write My Coursework

ONLINE

Write My Coursework

I have worked on wide variety of research papers including; Analytical research paper, Argumentative research paper, Interpretative research, experimental research etc.

$19 Chat With Writer
Math Guru

ONLINE

Math Guru

As an experienced writer, I have extensive experience in business writing, report writing, business profile writing, writing business reports and business plans for my clients.

$49 Chat With Writer
Top Class Results

ONLINE

Top Class Results

I can assist you in plagiarism free writing as I have already done several related projects of writing. I have a master qualification with 5 years’ experience in; Essay Writing, Case Study Writing, Report Writing.

$45 Chat With Writer
Assignment Helper

ONLINE

Assignment Helper

I can assist you in plagiarism free writing as I have already done several related projects of writing. I have a master qualification with 5 years’ experience in; Essay Writing, Case Study Writing, Report Writing.

$18 Chat With Writer
Accounting & Finance Mentor

ONLINE

Accounting & Finance Mentor

As per my knowledge I can assist you in writing a perfect Planning, Marketing Research, Business Pitches, Business Proposals, Business Feasibility Reports and Content within your given deadline and budget.

$27 Chat With Writer
Helping Hand

ONLINE

Helping Hand

I have written research reports, assignments, thesis, research proposals, and dissertations for different level students and on different subjects.

$45 Chat With Writer

Let our expert academic writers to help you in achieving a+ grades in your homework, assignment, quiz or exam.

Similar Homework Questions

New testament survey syllabus - Under what circumstances was equiano twice parted from his sister - High power variable capacitor - Age appropriate behavior expectations - Internal legal memorandum example - Tm g707 separation kit - Valuation of financial assets requires knowledge of - Literature - Onto definition linear algebra - His 200 historical analysis essay - Language features and conventions - A Social Invitation - Uml component diagram visio 2013 - Jasper jones charlie's parents - Personal narrative essay examples 750 words - Unisa vacancies e tutors - Shakespeare Taming of the Shrew and Much ado about Nothing - Argos pet insurance login - Unit 1 IP PC - Www classzone com books hs ca sc bio 07 - According to the activation synthesis theory dreams - Week 2 discussion 2 - White hat or gray hat hacking Choose one of these areas explain why a company might benefit from hiring someone to hack into their systems. - Technology project proposal example - Intermolecular forces in n2 - What is the payback period for the cash flows - Medisys corp the intenscare product development team problems - Rmit mechanical engineering and business management - The titration of an impure sample of khp - Assignments - Business ethics laura hartman pdf - Companion dog shows with obedience - Angelantoni life science srl - Animal farm allegorical comparison chart - Homework - Counting on and counting back - Certificate iv in professional writing and editing rmit - Uts student centre call - Wavelength of laser using diffraction grating - Stata working with dates - You have just completed a $20 000 feasibility study - Rawson homes price list - Operations and Management: Executive Practical Connection Assignment - 2x 3y 5x 2 3x 3y 2 - Organization wide policy framework implementation plan - Cambridge igcse computer science - Presentation of common stock without par value - Spelling for grade 4 - Essay - What is the purpose of a windshield survey - Differential treatment of siblings by parents - Readings about the social animal 11th edition pdf - How do you define yourself as a leader - El burlador de sevilla resumen - Healthcare Ethics - Two organ systems in plants - Qqq - Managerial economics - How to make a dice program in java - Mpa to n mm2 - Please see attachment before bidding. Finish my IP Nurse 15 modules online training. Will provide website and password. - Identity umd edu mfa - Stages in service innovation and development - Cola wars case study - Ethical and Legal Issues in Clinical Supervision - The clown punk poem - Martina mcclure london ky assault - Dcc - Nursing pediatrics case study - World and screen nicholas carr summary - Ip sla threshold timeout - Food a fact of life activity - Which of the following is not a covalent compound - Ford company vision and mission - Cuando vimos en la calle nos besamos. - Crocs competitive advantage - Avon products inc annual report 2016 - Research assignment #2 460 class - Behavior that violates significant social norms is called - Wayside youth and family support network - Neueda technologies ireland ltd - St john the baptist margate - Methods of real analysis goldberg solutions manual - Computer beep codes and their meaning - Why did jane elliot do her experiment - Fetal medicine fellowship uk - Target microwave ovens prices - The theory of multiple intelligences was proposed by ________ - Ringelmann effect in sport - Bachelor of human sciences with a major in human movement - Climate Change - Www greenwichcollege edu au goals - Bloom's taxonomy second language acquisition - External conflict in macbeth - Perpetual pure equity alpha - I just wanna be average quotes - Butl_ Learnign Feamework - G http www adobe com go reader_download - Kinetic study of an iodine clock reaction - Comparative financial statement analysis of pepsico and coca cola