# Statistics

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Salesman for the ABC Plastics Company drive an average of 240 miles per day with a standard deviation of 36 miles. If samples of 25 daily mileages are taken, what is the standard deviation of the distribution of sample means?
[Introductory Statistics]
(1)

The distribution of scores on the SAT is approximately normal with µ = 500 and σ = 100
[Introductory Statistics]
(1)

Most companies invest excess cash in bonds as investments in order to profit long-term from the growth of the investment
[Advanced Statistics]
(3)

If the best-fitting equation is of the form choose ________ in the Excel Trend Curve to model the data
[Advanced Statistics]
(3)

In linear regression the relationship between x<sub>i </sub>and y<sub>i</sub> is modeled by what equation?
[Advanced Statistics]
(3)

If the value of α that minimizes MAD exceeds ________ then simple exponential smoothing is not a recommended forecast technique
[Advanced Statistics]
(3)

For the function =RISKGENERAL(0, 40, {10, 15, 20, 25, 30, 35}, {2, 9, 1, 3, 4, 7}), which is the most likely value?
[Advanced Statistics]
(3)

If you want to run a simulation with different levels of an input, which @RISK function do you use?
[Advanced Statistics]
(3)

If we know the mean and standard deviation of service times we can find the shape parameter, k, of the Erlang distribution by computing
[Advanced Statistics]
(3)

If only 30% of the customers move from server 1 to server 2, which dialog box will reflect this fact?
[Advanced Statistics]
(3)

When a series system has a finite buffer in front of at least one task, which of the following is true?
[Advanced Statistics]
(3)