Answers:
at least 75.
at least 89.
approximately
68.
approximately
95.
Question 8
1 out of 1 points
Suppose the wait through immigration at JFK Airport in New York is thought to be
bell-shaped and symmetrical with a mean of 22 minutes. It is known that 68 percent
of travelers will spend between 16 and 28 minutes waiting to pass through
immigration. The standard deviation for the wait time through immigration is
Selected
Answer:
6
minutes.
Answers:
10
minutes.
6
minutes.
8
minutes.
9
minutes.
Question 9
1 out of 1 points
The MCAT is the admission exam that medical schools use as one of the criteria for
accepting students. The exam is based on a scale of 0-45. The following data shows
the MCAT scores for nine students.
32 36 29 31 30 35 34 26 30
The 35
th
percentile of this data set is ________.
Selected
Answer:
30
Answers:
30
31
32
31.
5

Question 10
1 out of 1 points
The ________ can found by subtracting the lowest value from the highest value in the
data set.
Selected
Answer:
range
Answers:
median
standard
deviation
variance
range
Question 11
1 out of 1 points
The ________ is found by first determining the index point,
i
=
0.5(
n
),
where
n
is the
number of data points.
Selected
Answer:
media
n
Answers:
averag
e
mean
media
n
mode
Question 12
1 out of 1 points
The ________ is the best measure of central tendency for categorical data.
Selected
Answer:
mode
Answers:
weighted
mean
mode
mean
median
Question 13
1 out of 1 points
The ________ is the most common and most important measure of variability in the
field of statistics.
Selected

Answer:
standard
deviation
Answers:
range
median
variance
standard
deviation
Question 14
1 out of 1 points
The ________ is the most commonly used measure of central tendency.
Selected
Answer:
mean
Answers:
standard
deviation
median
mode
mean
Question 15
1 out of 1 points
The ________ is the value in the data set for which half the observations are higher
and half the observations are lower.
Selected
Answer:
media
n
Answers:
mean
media
n
averag
e
mode
Question 16
1 out of 1 points
The ________ is the value that appears most often in a data set.
Selected
Answer:
mode
Answers:
mode
media

n
range
mean
Question 17
1 out of 1 points
The following data represents the ages of a household that consists of five people.

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