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stat 203 final exam practice questions
and answers
which one of these statistics is unaffected by outliers?
a) mean
b) standard deviation
c) median
d) range - ANSWER✔✔-c) median
supposed P(A) = 0.55 and P(B) = 0.25. what is P (A U B) if are A and B are disjoint?
a) 0.8
b) 0.4
c) 0.6625
d) 0.1375 - ANSWER✔✔-a) 0.8
take a simple sample of size 25 from a normal distribution: N( mu = 10, theta = 5). The distribution of the
sample mean is
a) N (mu= 4, theta= 5)
b) N (mu= 4, theta= 1)
c) N (mu= 10, theta= 5)
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stat 203 final exam practice questions
and answers
which one of these statistics is unaffected by outliers?
a) mean
b) standard deviation
c) median
d) range - ANSWER✔✔-c) median
supposed P(A) = 0.55 and P(B) = 0.25. what is P (A U B) if are A and B are disjoint?
a) 0.8
b) 0.4
c) 0.6625
d) 0.1375 - ANSWER✔✔-a) 0.8
take a simple sample of size 25 from a normal distribution: N( mu = 10, theta = 5). The distribution of the
sample mean is
a) N (mu= 4, theta= 5)
b) N (mu= 4, theta= 1)
c) N (mu= 10, theta= 5)
Copyright ©Stuvia International BV 2010-2024 Page 1/3
