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10 questions
Which one of the following is a discrete random variable?
Sam's height
Sam weight
Time Sam's runs the 110 m hurdles
Amount of Sam's brothers and sisters
Classify: How many miles it takes to use up a tank of gas.
Discrete
Continuous
Is this a probability distribution?
No, the sum of p(x) does not equal 1.
Yes, all p(x) are between 0 and 1.
No, all p(x) are not between 0 and 1.
Yes, the sum p(x) is 1.
The table above shows a television station's advertisement sales. The distribution of sales for one 24-hour day is given. Solve for the mean. Round to the nearest hundredth.
31.8
15.68
0.20
1.00
The table above shows a television station's advertisement sales. The distribution of sales for one 24-hour day is given. Solve for the standard deviation. Round to the nearest hundredth.
35.76
268.1
16.3
1279.35
Find the mean of a binomial distribution with n=50 and p=0.4
50
4
20
10
Find the standard deviation of a binomial distribution with n=50 and p=0.4 (Round to the nearest tenth)
4.2
3.5
12.0
6.2
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