A sports shop selects a random sample and records the sales of items made in China and thosemade in America.What is the SE Mean for the sales from China? b) Calculate a 95% confidence interval for the mean sales amount made in America Country of OriginChinaMean22.5Std. Deviation9.7511.650America3333.15

Given: A random sample is selected from a sport shop and the sales of items manufactured in China…

Answered: A sports shop selects a random sample…

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.CR: Chapter Review

Problem 37E: Find the positive geometric mean between 4 and 64.

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A sports shop selects a random sample and records the sales of items made in China and those

made in America.

What is the SE Mean for the sales from China?

b) Calculate a 95% confidence interval for the mean sales amount made in America

Country of Origin
China
Mean
22.5
Std. Deviation
9.75
11.6
50
America
33
33.15

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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A sports shop selects a random sample and records the sales of items made in China and those made in America. What is the SE Mean for the sales from China? b) Calculate a 95% confidence interval for the mean sales amount made in America