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Stat 3011, Fall 2010
Sample Midterm 1
Section 1: Multiple Choice (8 Questions, 3 points each)
For the multiple choice
questions, circle
one
of the listed choices for each question (no explanation is needed).
1. Assume the number of calories in a McDonald’s Big Mac follows a bellshaped distri
bution, with a mean of 576 and a standard deviation of 18. Then approximately 95%
of Big Macs have
(a) Between 567 and 585 calories
(b) Between 558 and 594 calories
(c) Between 540 and 612 calories
(d) None of the above
2. What is the sample mean of the following set of numbers:
28, 15, 26, 19, 18, 18, 23
(a) 18
(b) 19
(c) 20.7
(d) 21
3. Which of the following is a discrete quantitative variable?
(a) Number of people in line at a bank
(b) Height
(c) Telephone number
(d) Time it takes to complete a homework assignment
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View Full DocumentStat 3011, Fall 2010
Sample Midterm 1
4. The probability equation
P
(
A
∪
B
) =
P
(
A
) +
P
(
B
) holds:
(a) For all events
A
and
B
(b) Only if
A
and
B
are independent
(c) Only if
P
(
A
∩
B
) = 0
(d) This equation never holds
5. The probability equation
P
(
A
∩
B
) =
P
(
A
)
*
P
(
B
) holds:
(a) For all events
A
and
B
(b) Only if
A
and
B
are independent
(c) Only if
P
(
A
∩
B
) = 0
(d) This equation never holds
6. The probability equation
P
(
A
∩
B
) =
P
(
A
)
*
P
(
B

A
) holds:
(a) For all events
A
and
B
(b) Only if
A
and
B
are independent
(c) Only if
P
(
A
∩
B
) = 0
(d) This equation never holds
7. Joe Mauer’s 2009 batting average is:
(a) A statistic
(b) A parameter
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 Spring '11

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