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Comment on the following sampling designs:
a) A citizens' group interested in generating public and financial support for a new university basketball arena has published a questionnaire in area newspaper. Readers return the questionnaire by mail.
b) A departmental store that wishes to examine whether it is losing or gaining customers draws a sample from its list of credit cardholders by selecting every tenth name.
I have 400 feet of lumber to frame a rectangular patio. I want to maximize the area of the patio. What should the dimensions of th patio be.
The puzzle asks the reader to match each president with his vice president. If you make the matches randomly, how many matches are possible? What is the probability all 10 of your matches are correct?
Construct a frequency distribution (class, tally and frequency) for the data set using the indicated number of classes. In the table, include the midpoint, relative frequencies and cumulative frequencies.
Then, select a manufacturing or service process and the data to be measured for that process; for example, the dimensions of the product, or the transaction times. Discuss at least 5 potential special causes of variation in the data.
If 3 different factor levels show a lot of variation between levels this implies:
If a random sample of 500 third year students is taken at a city university, what is an estimate of the probability that 20 percent or less had switched majors within their first two years?
the seats were subjected to a safety stress test in which scores were assigned on a continuous scale of 0 to 10.
Given that a person uses five or more prescriptions, determine the probability that the person is age 65 or older.
A random variable X has the Pareto (α, θ) distribution (where α > 0, θ > 0) if F_X(x) = 1 - (θ/(θ+x))^α for x ≥ 0. For a fixed d > 0, let Y = X-d | X >d. Calculate F_Y(y) and EY.
What are the odds against drawing a card from an ordinary deck of cards and getting a spade?
a radio transmission tower is designed for a 50 year wind. this means that is there is a certain high wind velocity
based on the cell phone usage data what is the most economical individual plan?69.99 unlimited monthly1.99day
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