Multiple choice set 1
INFO: practice multiple choice questions related to slides for chapter 2, 3 and assignments 1, 2.
Q
1.
(2.20) The weight gains of beef steers were measured over a 140day test period. The average daily gains
(lb/day) of 9 steers on the same diet were as follows:
3.89 3.51 3.97 3.31 3.21 3.36 3.67 3.24 3.27
The mean, median and standard deviation for this data set are, respectively,
(a)
3.49; 3.36; 0.083
(b)
3.49; 3.36; 0.288
(c)
3.49; 3.21; 0.288
(d)
3.49; 3.21; 0.083
(e)
none of the preceding
Q
2.
For the data in question 1, the ﬁrst and the third quartile are, respectively,
(a)
3.255; 3.78
(b)
3.455; 3.74
(c)
3.51; 3.24
(d)
3.78; 3.255
(e)
none of the preceding
Q
3.
Two events each have probability 0.2 of occurring and are independent. The probability that neither occur is
(a)
0.64
(b)
0.36
(c)
0.04
(d)
0.2
(e)
none of the preceding
HINT: If
A
and
B
are events, then ’neither occurs’ can be represented as
A
c
and
B
c
. Draw a diagram to see
this.
Solution to Q3:
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 Fall '08
 Statistics, Normal Distribution, Probability, Probability theory

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