An automatic car wash with a single bay takes a constant 3 minutes to wash. The arrival rate is 10 cars per hour. Determine the average number of cars waiting in line for the car wash. The arrival rate of cars tends to follow a Poisson distribution.
a. 0.25 cars
b. 0.5 cars
c. 1 car
d. 1.5 cars
a. 0.25 cars
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Which of the following statements is not true about parametric tests?
A) Parametric tests are used when the independent variables are non-metric. B) The t test is a commonly used parametric test. C) The t statistic assumes that the variable is normally distributed and the mean is known (or assumed to be known) and the population variance is estimated from the sample. D) B and C are not correct.
The most widely used personality instrument is the
A. Rorschach. B. 16Personalities. C. DiSC Inventory Profile. D. Strengths Finder. E. Myers-Briggs Type Indicator.
If your sample mean is 20, your population average is 10, and your standard error of the mean is 2, what is your observed z value?
a.-5 b.5 c.0 d.50
All of the following may be negotiated between a client company and a contractor EXCEPT:
a. the amount of money to be paid. b. quality standards c. selection criteria for scoring models d. personnel assignments