SampHe Exaxmixnati*rs Six - La Jolla High School

144 Sample Examination Six Section I
31" When a national magazine rated a particular university as its choice for the #1 schooi
in the nation, it stated the average salary of its graduates. The distribution of salaries
was unimodal and skewed right. Later it was determined that the figure stated rvas
inflated due to the salary of one alumnus whose income was considered an outlier. If
the outlier is removed' which of the follou'ing rvould defirtite!}'remainthe same?
(A) mode
(B) median
(C) range
(D) variance
(E) standard deviation
32. Which of the following is a correct statement?
(A) An event that is certain not to happen has a probability of 1'0.
(B) Probabilities are numbers whose values can be any number from -l to 1.
(C) The total of the probabilities assigned to all outcomes in a sample space must be
exactly 1.0.
(D) Probabilities are always rvhole numbers.
(E) If two events are dependent, then the probabiliqv that both events occur is the
nroduct of their individual probabilities'
33. Michael and Jeffare scheduled to take their midterrn exam in statistics. The probability
that Michael will pass is 0.40 and the probability that Jeffwill pass is 0.60. If the two
events are independent, which statement is correct?
(A) The probability that exactly one passes is 0.0576.
(B) The probability that exactly one fails is 0.52.
(C) The probability that they both pass is 0.20.
(D) The probability that they both pass is 1.0'
(tr) The probability that they both fail is 1'0.
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