Download 1) How many possible outcomes would there be if three coins were

1) How many possible outcomes would there be if three coins were tossed once?
A)
2
B)
4
C)
6
D)
8
2) In a recent study, the following data was obtained in response to the questions, “Do
you favor recycling in your neighborhood?”
yes
no
no opinion
Males
25
15
10
Females
30
10
10
If a person is picked at random, what is the probability that the person is either male or
has no opinion regarding recycling?
A)
3/5
B)
3/10
C)
4/5
D)
7/10
3) A die is rolled 363 times. Find the standard deviation for the number of 3’s that will be
rolled
A)
60
B)
50
C)
7.1
D)
5.9
4) In a unimodal, symmetrical distribution as shown in the figure below
A)
The mean is the same as the median, but the mode can be different.
B)
The mean, the median, and the mode are the same.
C)
The median, and the mode are the same, but the mean can be different
D)
The mean, the median, and the mode are different
5)
An automobile dealer wants to construct a pie graph to represent the types of cars
sold in July. He sold 72 cars; 16 of which were convertibles. The convertibles will
represent how many degrees of the circle?
A)
60
B)
80
C)
100
D)
50
6) A survey of 12 people at a bookstore showed that five had purchased a hardcover
book. If seven people are selected at random, what is the probability that four of them had
purchased a hardcover book?
A)
12/86
B)
43/86
C)
18/86
D)
7/86
7) Two events A and B are _______________________ if the fact that A occurs does not
affect the probability of B occurring.
8) The probability that federal income tax returns will have 0, 1, or 2 errors is 0.53, 0.15,
and 0.32 respectively. If 10 randomly selected returns are audited, what is the probability
that six will have no errors, three will have one error, and one will have two errors?
A)
0.184
B)
0.127
C)
0.020
D)
0.035
9) If the letters A, B, C, D, E, and F are used in a five-letter code, how many different
codes are possible if repetitions are not permitted?
A)
625
B)
720
C)
7,776
D)
1,296
10) In a pie chart, if a pepperoni pizza were 24/72 of the distribution, how many degrees
would be needed to represent the pepperoni?
A)
90
B)
120
C)
60
D)
150
11)
If a weather center monitors and calculates the average number of tornadoes that
pass through Topeka, Kansas each year, what type of variable would they be
investigating?
A)
random variable
B)
controlled variable
C)
isolated variable
D)
weather variable