Answered: n of 4.1 gallons. Does this ample…

Name: THe U.S. Department of Agriculture claims that the mean consumption of
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Description: THe U.S. Department of Agriculture claims that the mean consumption of botted water by a person int eh US is 28.5 gallons per year. A random sample of 100 people in the Us had a mean bottled water sonsumption of 27.8 gallons per year with a standard

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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THe U.S. Department of Agriculture claims that the mean consumption of botted water by a person int eh US is 28.5 gallons per year. A random sample of 100 people in the Us had a mean bottled water sonsumption of 27.8 gallons per year with a standard deviation of 4.1 gallons. Does this ample indicate that the mean annual consumption of bottled water for people in the US in no 28.5 gallons per year?

At the 5% level of significance, what is the pwer of this test agianst the alternative M=27.4?

and

2. Suppost you were to conduct 50 separate independent significanct tests using a 5% level of segnificance. If all the null hypotheses are true, the probabiltiy that at least 3 of the tests are significant is. ?

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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