22 Aug Assignment Instructions Review Questions: Answer the following questi
Assignment Instructions
Review Questions: Answer the following questions in detail.
1. Explain the notions of mathematical differences, managerially important differences, and statistical significance. Can results be statistically significant and yet lack managerial importance. Explain your
answer.
2. Describe the steps in the procedure for testing hypotheses. Discuss the difference between a null hypothesis and an alternative hypothesis.
3. What purpose does a scatter diagram serve?
4. The following ANOVA summary data are the result of a regression with sales per year (dependent variable)as a function of promotion expenditures per year (independent variable) for a toy company.
F = MSA = 34,276
MSE 4,721
The degrees of freedom are 1 for the numerator and 19 for the denominator. Is the relationship statistically significant at ” = .05? Comment on your answer.
5. The following three random samples are taken from three normal populations with respective means μ1μ1, μ2μ2, and μ3μ3, and the same variance σ2.σ2.
Sample 1Sample 2Sample 32302513725 13
- Find the combined sample size n.
- Find the combined sample mean x−−.x-.
- Find the sample mean for each of the three samples.
- Find the sample variance for each of the three samples.
- Find MST.MST.
- Find MSE.MSE.
- Find F=MST∕MSE.
Here are the formulas to help you solve:
The combined sample size:
n=n1+n2+ ⋅ ⋅ ⋅ +nKn=n1+n2+ · · · +nK
The mean of the combined sample of all n observations:
x−−=Σxn=n1x−−1+n2x−−2+ ⋅ ⋅ ⋅ +nKx−−Knx-=Σxn=n1x-1+n2x-2+ · · · +nKx-Kn
The mean square for treatment:
MST=n1(x−−1−x−−)2+n2(x−−2−x−−)2+ ⋅ ⋅ ⋅ +nK(x−−K−x−−)2K−1MST=n1(x-1−x-)2+n2(x-2−x-)2+ · · · +nK(x-K−x-)2K−1
The mean square for error:
MSE=(n1−1)s21+(n2−1)s22+ ⋅ ⋅ ⋅ +(nK−1)s2Kn−K
Deliverable length 3-5 body page in APA format with the incorporation and citation of reference material. Show formula calculations.
Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteDemy. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Fill in all the assignment paper details that are required in the order form with the standard information being the page count, deadline, academic level and type of paper. It is advisable to have this information at hand so that you can quickly fill in the necessary information needed in the form for the essay writer to be immediately assigned to your writing project. Make payment for the custom essay order to enable us to assign a suitable writer to your order. Payments are made through Paypal on a secured billing page. Finally, sit back and relax.
About Writedemy
We are a professional paper writing website. If you have searched a question and bumped into our website just know you are in the right place to get help in your coursework. We offer HIGH QUALITY & PLAGIARISM FREE Papers.
How It Works
To make an Order you only need to click on “Order Now” and we will direct you to our Order Page. Fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Are there Discounts?
All new clients are eligible for 20% off in their first Order. Our payment method is safe and secure.