Answered: The article "The Average American Is in…

Name: The article "The Average American Is in Credit Card Debt, No Matter th
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Description: The article "The Average American Is in Credit Card Debt, No Matter the Economy"† states that in 2015, the average credit card debt for Americans between the age of 18 and 65 was $4,717. You are interested in determining if there is evidence that the

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 article "The Average American Is in Credit Card Debt, No Matter the Economy"† states that in 2015, the average credit card debt for Americans between the age of 18 and 65 was $4,717. You are interested in determining if there is evidence that the mean credit card debt in the current year is greater than the known average from 2015.

Q, Question Type: Estimation or hypothesis testing?

estimationhypothesis testing

S, Study Type: Sample data or experiment data?

sample dataexperiment data

T, Type of Data: One variable or two? Categorical or numerical?

one categorical variableone numerical variable two categorical variablestwo numerical variables

N, Number of Samples or Treatments: How many samples or treatments?

one sampleone treatment two samplestwo treatments

Indicate whether the method that you would consider would be a large-sample hypothesis test for a population proportion.

A hypothesis test for a population proportion would be appropriate.A hypothesis test for a population proportion would not be appropriate.

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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