5th Edition

ISBN: 9780100475038

Author: williams

Publisher: YUZU

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Chapter 13.2, Problem 11E

Four different paints are advertised as having the same drying time. To check the manufacturer’s claims, five samples were tested for each of the paints. The time in minutes until the paint was dry enough for a second coat to be applied was recorded. The following data were obtained.

At the α = .05 level of significance, test to see whether the mean drying time is the same for each type of paint.

Chapter 13.2, Problem 11E, Four different paints are advertised as having the same drying time. To check the manufacturer’s

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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Chapter 13.2, Problem 10E

Chapter 13.2, Problem 12E

Chapter 13 Solutions

EBK MODERN BUSINESS STATISTICS WITH MIC

Ch. 13.2 - 1. The following data are from a completely...Ch. 13.2 - 2. In a completely randomized design, seven...Ch. 13.2 - 3. Refer to exercise 2. what hypotheses are...Ch. 13.2 - Prob. 4E Ch. 13.2 - 5. In a completely randomized design, 12...Ch. 13.2 - Prob. 6E Ch. 13.2 - 7. Three different methods for assembling a...Ch. 13.2 - Prob. 8E Ch. 13.2 - 9. To study the effect of temperature on yield in...Ch. 13.2 - Prob. 10E

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