If you reject a joint null hypothesis using the F-test in a multiple hypothesis setting, then
A) a series of t-tests may or may not give you the same conclusion.
B) the regression is always significant.
C) all of the hypotheses are always simultaneously rejected.
D) the F-statistic must be negative.
Answer: A) a series of t-tests may or may not give you the same conclusion.
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Which of the following are examples of "mediums of exchange"?
A) pigs used to obtain chickens B) goods used to obtain other goods C) money used to buy goods D) all of the above
Which of the following statements is true?
A) The marginal cost curve intersects the average fixed cost curve at its minimum point. B) When marginal cost is greater than average fixed cost, average fixed cost increases. C) Average fixed cost does not change as output increases. D) As output increases, average fixed cost becomes smaller and smaller.