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What type of data would you expect to get from the following questions? Make suggestions as to how these questions could be improved?
a. What do you dislike about your travel to work?
b. Do you usually travel to work (give main mode of travel):
(i) On foot? Yes No
(ii) By bus? Yes No
(iii) By train? Yes No
(iv) In your own car? Yes No
(v) In someone else's car? Yes No
(vi) By other? (please specify) . . .
c. How long does your journey to work take, in minutes, door to door?
d. What was your age last birthday? years
e. 'No further motorway construction should take place'
Strongly agree 1
Agree 2
Neither agree or disagree 3
Disagree 4
Strongly disagree 5
You are working on an analysis of your company's current cost structure reviewing the various fixed and variable costs within your firm.
set up a hypothesis test for a scenario of your choice. you can use a scenario from your own experience or invent
A test was conducted to determine whether gender of a spokesperson affected the likelihood that consumers would prefer a new product.
By standing the stem and leaf plot on its side we can see that the corresponding histogram is approximately normal. Use it to assess the empirical rule.
To determine whether or not they have a certain desease, 80 people are to have their blood tested. However, rather than testing each individual separately, it has been decided first to group the people in groups of 10.
The Warren County Telephone Company claims in its annual report that "the typical customer spends $70 per month on local and long-distance service.
A machine is designed to produce gaskets with a mean inside diameter of 0.375 Inch. State the rejection region for the test statistic. Use an α = 0.01 level of significance. Suppose that a random sample of n = 20 gaskets had a mean of 0.373 inches. C..
Potential jurors. In Example 28.3 the indicator variable for year (x2= 0 for 1998 and x2= 1 for 2000) was used to combine the two separate regression models from Example 28.1 into one multiple regression model.
Why is it important to study ethics in statistics? Have you seen statistics misused? Without naming specific companies or people, can you provide examples?
A student has to have an accounting course and an economics course the next term. Assuming there are no schedule conflicts, describe the possible outcomes for selecting one section of the accounting course and one of the economics course if there..
Minutes of activity for lean people gad N(526, 107). Withink what limits do active minutes for about 95% of people in each group fall? Use the 68-95-99.7 rule.
A local health center noted that in a sample of 400 patients 80 were referred to them by the local hospital. a) Provide a 95% confidence level for all the patients who are referred to the health center by the hospital.
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