Answered: Veterans Day is an official United…

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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Veterans Day is an official United States public holiday that honors military veterans who served in the United States Armed Forces. It is observed annually on November 11 and coincides with other holidays, including Armistice Day and Remembrance Day, celebrated in other countries that mark the anniversary of the end of World War I. Major hostilities of World War I were formally ended at the 11th hour of the 11th day of the 11th month of 1918, when the Armistice with Germany went into effect. The United States previously observed Armistice Day. The U.S. holiday was renamed Veterans Day in 1954.

For all 2017 Veterans Day celebrations, of interest is to determine the mean number of people attending the celebrations. Based on this, what is the population of interest?

a) All 2017 celebrations

b) All celebrations

c) All Veterans Day celebrations

d) All 2017 Veterans Day celebrations

For all 2017 Veterans Day celebrations, of interest is to determine the mean number of people attending the celebrations.

Based on this, using both the appropriate symbol and in words, what is the parameter of interest?

a) μ the proportion of people attending all 2017 Veterans Day celebrations

b) piπ the proportion of people attending all 2017 Veterans Day celebrations

c) piπ the mean number of people attending all 2017 Veterans Day celebrations

d) muμ the mean number of people attending all 2017 Veterans Day celebrations

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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