Ex-14-2 2. The formula for a regression equation is Y’ = 2X + 9. a. What would be the predicted score for a person scoring 6 on X? a. If someone’s predicted score was 14, what was this person’s score on X? Ex-14-6 6. For the X, Y data below, compute: 4 6 3 7 5 12 11 17 10 9 11/20/2017 Homework Assignments – STAT 200 7361 Introduction to Statistics (2178) https://learn.umuc.edu/d2l/le/content/251892/viewContent/9770725/View 2/5 14 21 = a. r and determine if it is significantly different from zero. a. the slope of the regression line and test if it differs significantly from zero. a. the 95% confidence interval for the slope. Ex-17-5 5. At a school pep rally, a group of sophomore students organized a free raffle for prizes. They claim that they put the names of all of the students in the school in the basket and that they randomly drew 36 names out of this basket. Of the prize winners, 6 were freshmen, 14 were sophomores, 9 were juniors, and 7 were seniors. The results do not seem that random to you. You think it is a little fishy that sophomores organized the raffle and also won the most prizes. Your school is composed of 30% freshmen, 25% sophomores, 25% juniors, and 20% seniors. a. What are the expected frequencies of winners from each class? a. Conduct a significance test to determine whether the winners of the prizes were distributed throughout the classes as would be expected based on the percentage of students in each group. Report your Chi Square and p values. a. What do you conclude? Ex-17-14 14. A geologist collects hand-specimen sized pieces of limestone from a particular area. A qualitative assessment of both texture and color is made with the following results. Is there evidence of association between color and texture for these limestones? Explain your answer. 11/20/2017 Homework Assignments – STAT 200 7361 Introduction to Statistics (2178) https://learn.umuc.edu/d2l/le/content/251892/viewContent/9770725/View 3/5 Colour Texture Light Medium Dark Row Total Fine 4 20 8 Medium 5 23 12 Coarse 21 23 4 Column Total Illowsky Ex-11-70 Decide whether the following statements are true or false. 70. The standard deviation of the chi-square distribution is twice the mean. Ex-11-102 102. Do men and women select different breakfasts? The breakfasts ordered by randomly selected men and women at a popular breakfast place is shown in Table 11.55. Conduct a test for homogeneity at a 5% level of significance. French Toast Pancakes Waffles Omelets Row Total Men 47 35 28 53 Women 65 59 55 60 11/20/2017 Homework Assignments – STAT 200 7361 Introduction to Statistics (2178) https://learn.umuc.edu/d2l/le/content/251892/viewContent/9770725/View 4/5 Column Total Table 11.55 Ex-11-113 Use the following information to answer the next twelve exercises: Suppose an airline claims that its flights are consistently on time with an average delay of at most 15 minutes. It claims that the average delay is so consistent that the variance is no more than 150 minutes. Doubting the consistency part of the claim, a disgruntled traveler calculates the delays for his next 25 flights. The average delay for those 25 flights is 22 minutes with a standard deviation of 15 minutes. 113. df = _____ Ex-11-117 117. Let α = 0.05 Decision: _____ Conclusion (write out in a complete sentence.): _____ Ex-12-66 66. Can a coefficient of determination be negative? Why or why not? Ex-12-82 (Reduced version; you can omit e, f, and g) Use the following information to answer the next exercise. The cost of a leading liquid laundry detergent in different sizes is given in Table 12.31. Size (ounce) Cost ($) Cost per ounce 16 3.99 11/20/2017 Homework Assignments – STAT 200 7361 Introduction to Statistics (2178) https://learn.umuc.edu/d2l/le/content/251892/viewContent/9770725/View 5/5 32 4.99 64 5.99 200 10.99 Table 12.31 82. a. Using “size” as the independent variable and “cost” as the dependent variable, draw a scatter plot. a. Does it appear from inspection that there is a relationship between the variables? Why or why not? a. Calculate the least-squares line. Put the equation in the form of: ŷ = a + bx a. Find the correlation coefficient. Is it signifi
Why Choose Us
We value our clients. For this reason, we ensure that each paper is written carefully as per the instructions provided by the client. Our editing team also checks all the papers to ensure that they have been completed as per the expectations.
Professional Academic Writers
Over the years, our Acme Homework has managed to secure the most qualified, reliable and experienced team of writers. The company has also ensured continued training and development of the team members to ensure that it keep up with the rising Academic Trends.
Our prices are fairly priced in such a way that ensures affordability. Additionally, you can get a free price quotation by clicking on the "Place Order" button.
We pay strict attention on deadlines. For this reason, we ensure that all papers are submitted earlier, even before the deadline indicated by the customer. For this reason, the client can go through the work and review everything.
At Essay Writing Help, all papers are plagiarism-free as they are written from scratch. We have taken strict measures to ensure that there is no similarity on all papers and that citations are included as per the standards set.
Customer Support 24/7
Our support team is readily available to provide any guidance/help on our platform at any time of the day/night. Feel free to contact us via the Chat window or support email: firstname.lastname@example.org.
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.
Essay Writing Help has stood as the world’s leading custom essay writing services providers. Once you enter all the details in the order form under the place order button, the rest is up to us.
At Essay Writing Help, we prioritize on all aspects that bring about a good grade such as impeccable grammar, proper structure, zero-plagiarism and conformance to guidelines. Our experienced team of writers will help you completed your essays and other assignments.
Admission and Business Papers
Be assured that you’ll definitely get accepted to the Master’s level program at any university once you enter all the details in the order form. We won’t leave you here; we will also help you secure a good position in your aspired workplace by creating an outstanding resume or portfolio once you place an order.
Editing and Proofreading
Our skilled editing and writing team will help you restructure you paper, paraphrase, correct grammar and replace plagiarized sections on your paper just on time. The service is geared toward eliminating any mistakes and rather enhancing better quality.
We have writers in almost all fields including the most technical fields. You don’t have to worry about the complexity of your paper. Simply enter as much details as possible in the place order section.