The frequency distribution was obtained using a class width of 0.5 for data on cigarette tax rates. Use the frequency distribution to approximate the population mean and population standard deviation. Compare these results to the actual mean μ=$1.622 and standard deviation σ=$1.029. LOADING... Click the icon to view the frequency distribution for the tax rates. The population mean is $nothing. (Round to three decimal places as needed.) Enter your answer in the answer box and then click Check Answer. 2 parts remaining Clear All Check Answer Frequency distribution of cigarette tax rates Tax Rate Frequency 0.00– 0.49 6 0.50– 0.99 12 1.00– 1.49 6 1.50– 1.99 7 2.00– 2.49 7 2.50– 2.99 4 3.00– 3.49 3 3.50– 3.99 3 4.00– 4.49 1
Continuous Probability Distributions
Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.
Normal Distribution
Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!
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Clear All
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Check Answer
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Tax Rate
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Frequency
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0.00–
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0.49
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6
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0.50–
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0.99
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12
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1.00–
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1.49
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6
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1.50–
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1.99
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7
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2.00–
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2.49
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7
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2.50–
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2.99
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4
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3.00–
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3.49
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3
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3.50–
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3.99
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3
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4.00–
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4.49
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1
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