10. There are five sales associates at mid-motors ford. The five representatives and the number of cars they sold last week are:
Sales. Cars Sold
Representative.
Peter Staller. 8
Connie Stallter. 6
Juan Lopez. 4
Ted Barnes. 10
Peggy Chu 6
A. How many different samples of size 2 are possible?
B. List all possible samples of size 2, and compute the mean of each sample
C. Compare the mean of the sampling distribution of sample means with that of the population
D. On a chart compare the dispersion in sample means with that of the population.
12. Scrapper elevator company has 20 sales representatives who sell its product through out the US and Canada. The number of units sold last month by each representative is listed below. Assume these sales figures to be population values.
2 3 2 3 3 4 2 4 3 2 2 7 3 4 5 3 3 3 3 5
A. Draw a graph showing the population distribution
B. compute the mean of the population
C. Select five random samples of 5 each. Compute the mean of each sample. Use the methods described the methods to be used in order to determine the items to be included in the sample.
D. Compare the mean of the sampling distribution of the sample means to the population mean. Would you expect the two values to be about the same?
E. draw a histogram of the sample means. Do you notice the difference in the shape of the distribution of sample means compared to the shape of the population distribution?
16. A normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40. Compute the probability the sample mean is:
A. Less than 74
B. between 74 and 76
C. Between 76 and 77
D. Greater than 77
18. According to an IRS study it takes a mean of 330 minutes for taxpayers to prepare, copy, and electronically file a 1040 tax form. This distribution of times follows the normal distribution and the standard deviation is 80 minutes. A customer watchdog agency selects a random sample of 40 tax payers.
A. What is the standard error of the mean in this example?
B. what is the likelihood that sample mean is greater than 320 minutes?
C. What is the likelihood the sample mean is between 320 and 350 minutes?
D. What is the likelihood the sample mean is greater than 350 minutes?
Our Advantages
Plagiarism Free Papers
All our papers are original and written from scratch. We will email you a plagiarism report alongside your completed paper once done.
Free Revisions
All papers are submitted ahead of time. We do this to allow you time to point out any area you would need revision on, and help you for free.
Title-page
A title page preceeds all your paper content. Here, you put all your personal information and this we give out for free.
Bibliography
Without a reference/bibliography page, any academic paper is incomplete and doesnt qualify for grading. We also offer this for free.
Originality & Security
At thehomeworkwritings.com, we take confidentiality seriously and all your personal information is stored safely and do not share it with third parties for any reasons whatsoever. Our work is original and we send plagiarism reports alongside every paper.
24/7 Customer Support
Our agents are online 24/7. Feel free to contact us through email or talk to our live agents.
Try it now!
How it works?
Follow these simple steps to get your paper done
Place your order
Fill in the order form and provide all details of your assignment.
Proceed with the payment
Choose the payment system that suits you most.
Receive the final file
Once your paper is ready, we will email it to you.
Our Services
We work around the clock to see best customer experience.
Pricing
Our prices are pocket friendly and you can do partial payments. When that is not enough, we have a free enquiry service.
Communication
Admission help & Client-Writer Contact
When you need to elaborate something further to your writer, we provide that button.
Deadlines
Paper Submission
We take deadlines seriously and our papers are submitted ahead of time. We are happy to assist you in case of any adjustments needed.
Reviews
Customer Feedback
Your feedback, good or bad is of great concern to us and we take it very seriously. We are, therefore, constantly adjusting our policies to ensure best customer/writer experience.