Attachment # 00010292 - Q4.docx
Q4.docx (13.96 KB)
Raw Preview of Attachment:
(refer to the detailed question and attachment below)
1. A random sample of 6 states gave the following figures for annual per capital cigarette consumption and annual death rate per 100,000, from lung cancer: State Cigarette Consumption Death rate per 100,000 Delaware 3400 24 Indiana 2600 23 Iowa 2200 24 Montana 2400 24 New Jersey 2900 23 Washington 2100 24 (a) At 5% level of significance, do you think the cigarette consumption holds the explanatory power on the chance of getting lung cancer? (b) How well does the regression model explain the chance of getting lung cancer? (c) Do you observe any potential problems in the data and in the model? How would you propose to improve the experiment? Please be specific. 2. A study of several hundred professors’ salaries in a large American university in 1969 yielded the following multivariate regression. S = 230X1 + 18X2 + 100X3 + 490X4 + 190X5 + 50X6 (86) (8) (28) (60) (17) (370) Where S = annual salary; X1 = number of books written; X2 = number of ordinary articles published; X3 = number of excellent articles published; X4 = number of Ph.D. students supervised; X5 = number of years’ experience; X6 = teaching evaluation scores; The Standard Errors (SE) of the OLS estimates are in the parentheses. (a) Assuming 5% level of significance, which Xs show significant explanatory power? Interpret your findings. (b) Do you see any potential problems in the model? Explain. 3. Texoil has a project available for compete. The project asks to estimate which one of its two gasoline brands -brand A or brand B, gives superior mileage. As a student with some background in Statistics, you would like to give it a try. How do you propose to conduct the experiment and the test?? Your answer has to include details of the experiment design, the measurement of the data/ variables, and the proposed test (hint: this question is NOT about regression) 4. You have $10,000 saved up to invest for a year, and are considering stocks (S) and/or short term Treasury bills (T). The returns from both sources are judged uncertain, of course, as the following probability table indicates: TS-10%0%10%20%6%00.1.18%0.1.3.210%.1.100(1) If you split your investment 30% in stock and 70% in Treasury bills, what would be the expected return and standard deviation? (2) Are the returns of stock and treasury bills independent?
4 statistics questions

4 statistics questions

Question # 00436827 Posted By: stracty61 Updated on: 12/05/2016 09:05 AM Due on: 12/08/2016
Subject Statistics Topic General Statistics Tutorials:
Question
Dot Image
There are 4 questions on the attached word doc.  I would like the work to be shown 
Dot Image
Attachments
Q4.docx (13.96 KB)
Tutorials for this Question
  1. neil2103
    Tutorial # 00432507 Posted By: neil2103 Posted on: 12/05/2016 09:48 AM
    Puchased By: 3
    Tutorial Preview
    The solution of 4 statistics questions...
      Get the Solution
    Attachments
    Q4_(1)2(1).docx (21.73 KB)
Whatsapp Lisa