Classify: The numbers of cheeseburgers a fast-food restaurant serves each day
Discrete
Continuous
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: Height of a plant measured each day for 30 days.
Discrete
Continuous
Classify: The time it takes for a light bulb to burn out.
Discrete
Continuous
Classify: How many miles it takes to use up a tank of gas.
Discrete
Continuous
Is this a probability distribution?
No
Yes
The table represents the probability of guessing correct on a 5 question true-false quiz. Find the mean and the standard deviation.
μ = .4; σ = 7.5
μ = 2.5; σ = 1.1
μ = 3; σ = 1.3
μ = .1; σ = 0
The table above shows the number of cell phones per household in a small town. Find the mean round to the nearest hundredth.
2.80
2.93
0.10
0.14
The table above shows the number of cell phones per household in a small town. Find the standard deviation. Round to the nearest hundredth.
0.80
1.70
1.30
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 mean. Round to the nearest hundredth.
31.80
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.
45.81
266.2
16.30
0.20
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