suppose the heights of 18-year-old men are approximately normally distributed, with mean 73 inches and standard deviation 6 inches Suppose the heights of 18-year-old men are approximately normally distributed, with mean 73 inches and standard deviation 6 inches.A USE SALT(a) What is the probability that an 18-year-old man selected at random is between 72 and 74 inches tall? (Round your answer to four decimalplaces.)(b) If a random sample of twenty-four 18-year-old men is selected, what is the probability that the mean height x is between 72 and 74 inches?(Round your answer to four decimal places.)(c) Compare your answers to parts (a) and (b). Is the probability in part (b) much higher? Why would you expect this?O The probability in part (b) is much higher because the mean is smaller for the x distribution.O The probability in part (b) is much higher because the standard deviation is larger for the x distribution.O The probability in part (b) is much higher because the mean is larger for the x distribution.O The probability in part (b) is much higher because the standard deviation is smaller for the x distribution.O The probability in part (b) is much lower because the standard deviation is smaller for the x distribution.

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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suppose the heights of 18-year-old men are approximately normally distributed, with mean 73 inches and standard deviation 6 inches

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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