Introduction to the Practice of Statistics 9th edition by David S. Moore Test bank

A)Is the shortest lifetime in this data set equal to 100 months?
B)Is the median lifetime in this data set somewhere between 150 and 175 months?
C)Is the range of this data set equal to 200 months?
D)Is it possible that all of these 16 appliances had estimated lifetimes that were longer than 10 years?
 
 
116.Which of the following is likely to have a mean that is smaller than the median?
 A)The salaries of all National Football League players
 B)The scores of students (out of 100 points) on a very easy exam in which most score perfectly but a few do very poorly
 C)The number of text messages sent by students and faculty at a large university
 D)The scores of students (out of 100 points) on a very difficult exam on which most score poorly but a few do very well
 
 
117.The salaries of Major League Baseball players range from several hundred thousand dollars per year to many millions per year. Suppose a histogram is made of all last year's salaries of Major League Baseball players. Which shape would best describe the shape of this histogram?
 A)Skewed to the left
 B)Bell-shaped
 C)Skewed to the right
 D)Bimodal
 
 
118.A reporter wishes to portray baseball players as overpaid. Which measure of center should he report as the average salary of major league players?
 A)The mean
 B)The median
 C)Either the mean or median—they will be equal in this case.
 D)Neither the mean nor the median—both will be much lower than the actual average salary.
 
 
119.The Insurance Institute for Highway Safety publishes data on the total damage suffered by compact automobiles in a series of controlled, low-speed collisions. The cost for a sample of nine cars, in hundreds of dollars, is provided below
 
10     6     8     10     4     3.5     7.5     8     9
 
What is the median cost of the total damage suffered for this sample of cars?
 A)$400
 B)$730
 C)$800
 D)$1000
 
 
120.The Insurance Institute for Highway Safety publishes data on the total damage suffered by compact automobiles in a series of controlled, low-speed collisions. The cost for a sample of nine cars, in hundreds of dollars, is provided below
 
10     6     8     10     4     3.5     7.5     8     9
 
What is the first quartile for the above data?
 A)$350
 B)$500
 C)$600
 D)None of the above
 
 
121.The Insurance Institute for Highway Safety publishes data on the total damage suffered by compact automobiles in a series of controlled, low-speed collisions. The cost for a sample of nine cars, in hundreds of dollars, is provided below
 
10     6     8     10     4     3.5     7.5     8     9
 
What is the interquartile range of the above data?
 A)A value less than $200
 B)A value between $200 and $460
 C)A value between $460 and $800
 D)None of the above
 
 
122.The Insurance Institute for Highway Safety publishes data on the total damage suffered by compact automobiles in a series of controlled, low-speed collisions. The cost for a sample of nine cars, in hundreds of dollars, is provided below
 
10     6     8     10     4     3.5     7.5     8     9
 
What is the mean of the total damage suffered for this sample of cars?
 A)$239
 B)$733
 C)$800
 D)$950
 
 
123.The Insurance Institute for Highway Safety publishes data on the total damage suffered by compact automobiles in a series of controlled, low-speed collisions. The cost for a sample of nine cars, in hundreds of dollars, is provided below
 
10     6     8     10     4     3.5     7.5     8     9
 
Using the correct units, what is the value of the variance?
 A)224.85 dollars