All of the following are true about a probability density function, f(x), except ________.
A) f(x) 0 for all values of x
B) the total area under the function above the x-axis is 1.0
C) the probability distribution will approach the shape of a smooth curve
D) the probability will assume a value greater than or equal to a specified value, x
Q. 2When using a 95 percent confidence interval for a mean, the area in the upper tail of the distribution that is outside the interval is 5 percent.
Indicate whether the statement is true or false
Q. 3Explain the Correlation Matrix tool used in Crystal Ball.
What will be an ideal response?
Q. 4Using Solver, determine the number of hours used in the painting department.
A) 175.076 hours
B) 302.294 hours
C) 225.000 hours
D) 320.000 hours
Q. 5The curve that characterizes outcomes of a continuous random variable is called a ________.
A) cumulative distribution function, c(x)
B) probability mass function, p(x)
C) continuous random function, r(x)
D) probability density function, f(x)
Q. 6In developing and conducting a survey, what is the purpose of the pre-test phase?
A) To make sure that the cost of developing the survey instrument is not too great
B) To generate initial data for analysis
C) To catch any problems with the questionnaire before it is fully administered
D) To make sure that the respondents like the issues being addressed by the survey
Q. 7One of the basic differences between a uniform probability distribution and a normal probability distribution is that the uniform is symmetrical but the normal is skewed depending on the value of the standard deviation.
Indicate whether the statement is true or false
Q. 8From the data given above, what is the forecastin 000sfor the year 2003?
A) 41 units
B) 33 units
C) 66 units
D) 49 units
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