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Explain the appropriate test for the data.

Explain the appropriate test for the data.

Solution Summary: The author explains that the two-sample t-test is more suitable than the paired test because the sample of seeded and unseeded clouds were not matched each other.

Intro Stats

4th Edition

ISBN: 9780321826275

Author: Richard D. De Veaux

Publisher: PEARSON

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

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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 + ...

Chapter 21, Problem 14E

a.

To determine

Explain the appropriate test for the data.

b.

To determine

State the conclusion for the hypothesis test.

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Chapter 21, Problem 13E

Chapter 21, Problem 15E

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Chapter 21 Solutions

Intro Stats

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Ch. 21 - Prob. 6E Ch. 21 - Blocking cars and trucks Thinking about the data...Ch. 21 - Prob. 8E Ch. 21 - Prob. 9E Ch. 21 - Prob. 10E Ch. 21 - Prob. 11E Ch. 21 - Freshman 15? Many people believe that students...Ch. 21 - Prob. 13E Ch. 21 - Prob. 14E Ch. 21 - Prob. 15E Ch. 21 - Friday the 13th, accidents The researchers in...Ch. 21 - Prob. 17E Ch. 21 - Prob. 18E Ch. 21 - Prob. 19E Ch. 21 - Wind speed, part II In Exercise 18, we saw summary...Ch. 21 - Prob. 21E Ch. 21 - Prob. 22E Ch. 21 - 23. Temperatures The following table gives the...Ch. 21 - Prob. 24E Ch. 21 - Prob. 25E Ch. 21 - Brain waves An experiment was performed to see...Ch. 21 - Prob. 27E Ch. 21 - Prob. 28E Ch. 21 - Prob. 29E Ch. 21 - Prob. 30E Ch. 21 - Stopping distance A tire manufacturer tested the...Ch. 21 - Stopping distance 60 For another test of the tires...Ch. 21 - Prob. 33E Ch. 21 - Prob. 34E Ch. 21 - Prob. 35E Ch. 21 - Prob. 36E Ch. 21 - Prob. 37E Ch. 21 - 38. Marathon start-up years 2010 When we...Ch. 21 - BST Many dairy cows now receive injections of BST,...Ch. 21 - BST II In the experiment about hormone injections...

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