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Name: A soft drink bottle vendor claims that it's process yield bottles with
Uploaded: 2024-03-20T07:07:12.000Z
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Description: A soft drink bottle vendor claims that it's process yield bottles with a mean internal strength of 157psi and a standard deviation of 3psi and is normally distributed. As part of its vendor surveillance a bottler strikes an agreement with the vendor

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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A soft drink bottle vendor claims that it's process yield bottles with a mean internal strength of 157psi and a standard deviation of 3psi and is normally distributed. As part of its vendor surveillance a bottler strikes an agreement with the vendor that permits the bottler to sample from the vendor's production to verify the vendor's claim.

a. Supposed the bottler ramdomly selected 15 bottles to sample. What is the mean and the standard deviation?

b. Suppose it's not normal distribution. What is the mean and standard deviation for 64 e ramdomly selected bottles?

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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