Sample Final Exam - S2017.pdf - BUAD310 SPRING 2017 SAMPLE...

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BUAD310 SPRING 2017 SAMPLE
FINAL EXAM
TEST FORM
A
Please print and mark your name,
USC ID number and test form
neatly on the Scantron.
Make sure to clearly mark your answer by selecting one of the choices. If you mark
the wrong answer, you will receive a “0” for that question. Please be very careful
when marking your choice because no credit will be given if your calculations are
correct but you marked the wrong answer. Make sure to read the questions very
carefully and select the best answer. You have 120 minutes (2 hours) to complete
the test.

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TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is
false.
1) The level of significance refers to the probability of making a Type II error. 1)
2) In hypothesis testing, we cannot prove a null hypothesis is true. 2)
3) A hypothesis test may be statistically significant, yet have little practical importance. 3)
4) For a sample of nine items, the critical value of Student's t for a left-tailed test of a
mean at α = .05 is -1.860.
4)
5) If the null and alternative hypotheses are H
0
: μ ≤ 100 and H
1
: μ > 100, the test is
right-tailed.
5)
6) A scatter plot is used to visualize the association (or lack of association) between two
quantitative variables.
6)
7) The correlation coefficient r measures the strength of the linear relationship between
two variables.
7)
8) A sample correlation r = .40 indicates a stronger linear relationship than r = -.60.
9) A fitted regression Profit = -570 + 30 Sales (all variables in thousands of dollars) was
estimated from a random sample of 20 pharmacies . For a pharmacy with Sales = 10,
we predict that Profit will be:
10) A fitted regression Profit = -570 + 30 Sales (all variables in thousands of dollars) was
estimated from a random sample of pharmacies . From this regression, in order to break
even ( Profit ≥ 0), a pharmacy's Sales would have to be at least:

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11) Which of the following is true of the correlation, r?