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

French imperialism in indochina - Homeland Security - Statistics - Week 6 Crisis intervention - 10/16 as a percent - His 200 historical analysis essay - How to calculate rate of transpiration - Introduction of a Successful Company - Introduction to business ethics desjardins pdf - Entre - Iso 1219 1 2012 pdfiso 1219 1 2012 pdf - Link box with svl - Project Plan - Principles of Microeconomics - Trouble in the truss construction shop critical thinking - 10 days in europe game - Ndis access request forms - Describe one characteristic of a disaster recovery team member - Credit by assessment rasmussen - Where did job live in the bible - Good prose is like a window pane meaning - Revolutionary mothers essay - Effect of temperature on yeast respiration experiment - employer of a mid-size business - Does macbeth regret killing duncan - Web application threat model example - Alexa Pearl: Bio, Age, Early Life, Instagram & ManyVids - Community organizing training manual - Counseling form da 4856 - Elements of longer messages report analysis - Wages Issues - Check forest functional level - The dead james joyce - What is isobar handover - Access control Assignment 8 - Psyc325 unit 3 discussion board - Contract management maturity model cmmm - Rhetorical analysis of a song - Short answer - Case Study - Biopsychology of emotion stress and health - Threats to a computerized accounting system - Blog Post - Salesforce case comment notification - Black and gold methylated spirits msds - Congratulations on your purchase - Mybcommlab answers - Special consideration for exams - DISC 3 Trans of N - Decision by blades inc to invest in thailand - Unit 8 Pharmacology Self-Reflection Assignment - ASSESSMENT Aptitude Test - Discussion - How to graph marginal cost curve - Give an example of a time you overcame conflict - Hydraulic tools with names - Ib chemistry topic 9 - Vulnerable Populations - Nasa postdoctoral program success rate - Chromatography examples in chemistry - Rok Fin100 Week 11 - Ofd full form in courier - Romeo and juliet tattoo - Traditional customer service tended to be - N5 physics past papers - History of art week 2 discussion - Topic is Leadership or Army Leadership - Battle for National Reform Assignment - A dry cleaner uses exponential smoothing to forecast equipment - Hidden rules and expected and unexpected behaviors - Principles of distributed database systems 2nd edition pdf free download - Pros and cons of university - Freedoms of the air - Synergy education first aid - Discussion(DF) - Chromagen free hot water system - Hash house harriers down down song - Macro-Environmental Factors - What does strategic alliance mean - Motivation to work for united nations - How tall is 68 inches in feet and inches - Sadako and the thousand paper cranes chapter questions - Bus assignment - Independent educational psychologist hampshire - File allocation table diagram - Caltex unleaded petrol sds - Size 10 ring in letters - Mict seta skills programmes - Draw a project network from the following information - Summary for reading (MUSIC essay) - Geberit press tool calibration - Organic chemistry homework - Monash deferred exam dates - Identifying cations in solution lab answers - Discussion - Mark wales jacket - Social and Cultural Diversity Paper: Paper - Swot analysis anytime fitness - Keaira brown story - How to write a tv show analysis