A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and other features. The distribution of the number of months in service for the fleet of cars is bell-shaped and has a mean of 37 months and a standard deviation of 9 months. Using the 68-95-99.7 (Empirical) Rule, what is the approximate percentage of cars that remain in service between 10 and 19 months? The approximate percentage of cars that remain in service between 10 and 19 months is %. Do not
A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and other features. The distribution of the number of months in service for the fleet of cars is bell-shaped and has a mean of 37 months and a standard deviation of 9 months. Using the 68-95-99.7 (Empirical) Rule, what is the approximate percentage of cars that remain in service between 10 and 19 months? The approximate percentage of cars that remain in service between 10 and 19 months is %. Do not
A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and other features. The distribution of the number of months in service for the fleet of cars is bell-shaped and has a mean of 37 months and a standard deviation of 9 months. Using the 68-95-99.7 (Empirical) Rule, what is the approximate percentage of cars that remain in service between 10 and 19 months? The approximate percentage of cars that remain in service between 10 and 19 months is %. Do not
A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and other features. The distribution of the number of months in service for the fleet of cars is bell-shaped and has a mean of 37 months and a standard deviation of 9 months. Using the 68-95-99.7 (Empirical) Rule, what is the approximate percentage of cars that remain in service between 10 and 19 months? The approximate percentage of cars that remain in service between 10 and 19 months is %. Do not
Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...
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