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In the following situations, decide whether you would use a personal interview, observation, mailed questionnaire or telephone interview. Give your reasons.
a) A survey of the residents of a new subdivision on why they happened to select that area in which to live. You also wish to secure some information about what they like and do not like about life in the subdivision.
b) A poll of students at Metro University on their preferences among three candidates who are running for president of the students' union.
c) A survey of 108 wholesale grocery companies, scattered throughout a country, on their personnel management policies.
d) A survey of financial officers of the Fortune 500 Corporations to learn their predictions for the economic outlook in their industries in the next year.
He gets a result of 1.5. He then rounds the result to 2, saying that it is not possible to get 1.5 girls when three babies are born. Is this reasoning correct? Explain.
An engineer in an automotive factory wishes to know what the tire pressure is on all cars leaving the factory. She measures the tire pressure on a sample of 10 randomly selected cars as they are about to leave the plant, in psi.
q1 is the gender of a nurse related to the specialty he or she chooses?? a hospital administrator counted the number of
The mean driving time is 35 minutes with a standard deviation is 10 minutes. What is the 98 percent confidence interval for the population mean?
Sampling distribution for the sample mean for a sample of size 160. This looks even more like a normal curve. This looks almost exactly like a normal curve. What have we seen from the above example?
if a production manager wanted to determine whether or not the first shift was processing more widgets than the second
assume the carrying capacity of the earth is 15 billion. use 1960s peak annual growth rate of 2.1 and population of 3
Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name. Compute the standard error of the proportion.
A player of a video game is confronted with a series of opponents and has an 79% probability of defeating each one. Success with any opponent is independent of previous encounters. The player continues to contest opponents until defeated
Create the 90% confidence interval for mean score of all such subjects. You may suppose scores are usually distributed.
For a sample of 100 employees, a personnel direc- tor has collected data on x 5 the number of years an employee has been with the firm and y 5 the number of shares of company stock the employee owns. The data are in file XR02044. a. Generate a scatte..
The following data are daily price quotations of two stocks:
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