Stat 160 Prequiz over Section 4.1, 4.2, and 4.3

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1. I choose 100 WMU students at random and ask them their weight. Let the random variable X= weight. What type of random variable is X?

Continuous
Discrete
Parameter
Variable
2. Let the random variable X be the number rolled from a fair 6-sided die. What type of random variable is X?
Discrete.
Continuous.
Whacko.
Not enough information.
3. Let the random variable X be the number rolled from a fair 6-sided die. Which is the correct probability distribution of X [Pr(x=1), Pr(x=2), Pr(x=3), Pr(x=4), Pr(x=5), Pr(x=6)]?

1/6, 2/6, 3/6, 4/6, 5/6, 6/6
0, 0, 1, 0, 0, 0
1, 1, 1, 1, 1, 1
1/6, 1/6, 1/6, 1/6, 1/6, 1/6
4. The mean of a random variable is an example of a

Continuous random variable.
Discrete random variable.
Parameter.
Country in Central America.