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STAT 200 OL1/US1 Sections Final Exam Spring 2016

STAT 200 OL1/US1 Sections Final Exam Spring 2016

1.    True or False. Justify for full credit.

(a)    The standard deviation of a data set cannot be negative.

(b)    If P(A) = 0.4 , P(B) = 0.5, and A and B are disjoint, then P(A AND B) = 0.2.

(c)    The mean is always equal to the median for a normal distribution.

(d)    A 95% confidence interval is wider than a 98% confidence interval of the same parameter.

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