Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was 75.2 Mbps. The complete list of 50 data speeds has a mean of x= 15.49 Mbps and a standard deviation of s = 18.83Mbps. Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measuredwas 75.2 Mbps. The complete list of 50 data speeds has a mean of x = 15.49 Mbps and a standard deviation ofs= 18.83 Mbps.a. What is the difference between carrier's highest data speed and the mean of all 50 data speeds?b. How many standard deviations is that [the difference found in part (a)]?c. Convert the carrier's highest data speed to a z score.d. If we consider data speeds that convert to z scores between - 2 and 2 to be neither significantly low nor significantlyhigh, is the carrier's highest data speed significant?| Mbps.(Type an integer or a decimal. Do not round.)a. The difference isb. The difference isstandard deviations.(Round to two decimal places as needed.)c. The z score is z=D(Round to two decimal places as needed.)d. The carrier's highest data speed is

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ISBN:9781119256830

Author:Amos Gilat

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Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was 75.2 Mbps. The complete list of 50 data speeds has a mean of x= 15.49 Mbps and a standard deviation of s = 18.83Mbps.

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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