BSTAT 3321 Final questions and answers graded
A+ updated
1. The mean return on equity (ROE) for a group of
D) .2
firms in an industry is 15% with a variance of
9%. The coeffi- cient of variation of the
industry's ROE is .
A) .6
B) 1.7
C) 5.0
D) .2
A) Attendees at a
2. Which of the following represents a population sport- ing event and
and a sample from that population? those who purchased
A) Attendees at a sporting event and those popcorn at said
who pur- chased popcorn at said sporting sporting event
event
B) Full-time employees at a marketing firm, and
tem- porary summer interns at the marketing
firm
C)Stocks available on the NYSE and stocks
on the NASDAQ
D)Seniors at Boston College and students in a
first-se- mester business statistics course
3. Suppose the average price for new cars has a mean of C) $18,900
to $41,300
$30,100, a standard deviation of $5,600 and is
normal- ly distributed. Based on this
information, what interval of prices would we
expect at least 95% of new car prices to fall
within?
,BSTAT 3321 Final questions and answers graded
A+ updated
A) $13,300 to $46,900
B) $24,500 to $35,700
C)$18,900 to $41,300
D) $7.700 to $52,500
4. Consider a population with data values of 12 8 28 22 12 B) 8.00
30 14 The population standard deviation is the closest
,BSTAT 3321 Final questions and answers graded
A+ updated
to . 8. The
following
A) 64.00 histogram
B) 8.00 represents
C) 8.64 the number
D) 74.67 of pages in
each book
5. Differences between categories are
within a
meaningless with
collection.
data.
What is the
A) interval B) ordinal C) continuous D) ratio frequency
of books
6. Amounts spent by a sample of 200 customers containing
at a retail store are summarized in the at least
following relative frequency distribution. 250 but
Amount Spent (in $) Frequency 0 up to 10 15 fewer than
10 up to 20 75 20 up to 30 55 30 up to 40 55 300 pages?
The mean amount spent by customers is the
closest to .
A) $50.00 B) $17.50 C) $20.00 D) $22.50
7. An analyst constructed the following frequency
distri- bution on the monthly returns for 50
selected stocks. Class (in percent) Frequency
−10 up to 0 8 0 up to 10
25 10 up to 20 15 20 up to 30 2 The number
of stocks with returns of less than 10% is .
A) 48 B) 33 C) 8 D) 25
, BSTAT 3321 Final questions and answers graded
A+ updated
B) ordinal
D) $22.50
B) 33
D) 7
A+ updated
1. The mean return on equity (ROE) for a group of
D) .2
firms in an industry is 15% with a variance of
9%. The coeffi- cient of variation of the
industry's ROE is .
A) .6
B) 1.7
C) 5.0
D) .2
A) Attendees at a
2. Which of the following represents a population sport- ing event and
and a sample from that population? those who purchased
A) Attendees at a sporting event and those popcorn at said
who pur- chased popcorn at said sporting sporting event
event
B) Full-time employees at a marketing firm, and
tem- porary summer interns at the marketing
firm
C)Stocks available on the NYSE and stocks
on the NASDAQ
D)Seniors at Boston College and students in a
first-se- mester business statistics course
3. Suppose the average price for new cars has a mean of C) $18,900
to $41,300
$30,100, a standard deviation of $5,600 and is
normal- ly distributed. Based on this
information, what interval of prices would we
expect at least 95% of new car prices to fall
within?
,BSTAT 3321 Final questions and answers graded
A+ updated
A) $13,300 to $46,900
B) $24,500 to $35,700
C)$18,900 to $41,300
D) $7.700 to $52,500
4. Consider a population with data values of 12 8 28 22 12 B) 8.00
30 14 The population standard deviation is the closest
,BSTAT 3321 Final questions and answers graded
A+ updated
to . 8. The
following
A) 64.00 histogram
B) 8.00 represents
C) 8.64 the number
D) 74.67 of pages in
each book
5. Differences between categories are
within a
meaningless with
collection.
data.
What is the
A) interval B) ordinal C) continuous D) ratio frequency
of books
6. Amounts spent by a sample of 200 customers containing
at a retail store are summarized in the at least
following relative frequency distribution. 250 but
Amount Spent (in $) Frequency 0 up to 10 15 fewer than
10 up to 20 75 20 up to 30 55 30 up to 40 55 300 pages?
The mean amount spent by customers is the
closest to .
A) $50.00 B) $17.50 C) $20.00 D) $22.50
7. An analyst constructed the following frequency
distri- bution on the monthly returns for 50
selected stocks. Class (in percent) Frequency
−10 up to 0 8 0 up to 10
25 10 up to 20 15 20 up to 30 2 The number
of stocks with returns of less than 10% is .
A) 48 B) 33 C) 8 D) 25
, BSTAT 3321 Final questions and answers graded
A+ updated
B) ordinal
D) $22.50
B) 33
D) 7
