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QNT 561 Final Exam University of Phoenix New Courses

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19. As the size <strong>of</strong> the sample increases, what happens to the shape <strong>of</strong> the distribution <strong>of</strong><br />

sample means?<br />

a) It cannot be predicted in advance<br />

b) It is positively skewed<br />

c) It is negatively skewed<br />

d) It approaches a normal distribution<br />

20. For any chi-square goodness-<strong>of</strong>-fit test, the number <strong>of</strong> degrees <strong>of</strong> freedom is found by<br />

______.<br />

a) n + k<br />

b) k -1<br />

c) n – k - 1<br />

d) n + 1<br />

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