A predictive analysis technique in which variables are used to predict the level of another by use of the straight-line formula, y= a + bx is:
A) chi-square
B) Pearson correlation
C) digression analysis
D) regression analysis
E) summarization analysis
D
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After the planning phase, the SDLC includes four major phases: analysis, design, implementation, and _____.
A. production B. support C. execution D. documentation
How would XBRL GL be used for internal uses such as management accounting?
What will be an ideal response?
On a recent holiday evening, a sample of 500 drivers was stopped by the police. Three hundred were under 30 years of age. A total of 250 were under the influence of alcohol. Of the drivers under 30 years of age, 200 were under the influence of alcohol.Let A be the event that a driver is under the influence of alcohol.Let Y be the event that a driver is less than 30 years old.
a.Determine P(A) and P(Y).b.What is the probability that a driver is under 30 and not under the influence of alcohol?c.Given that a driver is not under 30, what is the probability that he/she is under the influence of alcohol?d.What is the probability that a driver is under the influence of alcohol, when we know the driver is under 30?e.Show the joint probability table.f.Are A and Y mutually exclusive events? Explain.g.Are A and Y independent events? Explain.? What will be an ideal response?
Which of the following is true about a nonprobability sample?
A) The hierarchical sampling method is used to select people who appear most willing to participate. B) Representativeness is the key determinant of who participates. C) A researcher uses personal judgment to select participants. D) Every member of the population is included in the sample. E) Each member of the population has some chance of being included in the sample.