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Tim Kenney, a painter, used 6 4 _ 5 gallons of paint on the exterior of a house and 9 3

Contemporary Mathematics | 6th Edition | ISBN: 9780538481267 | Authors: Robert Brechner ISBN: 9780538481267 378

Solution for problem 34 Chapter SECTION II

Contemporary Mathematics | 6th Edition

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Contemporary Mathematics | 6th Edition | ISBN: 9780538481267 | Authors: Robert Brechner

Contemporary Mathematics | 6th Edition

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Problem 34

Tim Kenney, a painter, used 6 4 _ 5 gallons of paint on the exterior of a house and 9 3 _ 4 gallons on the interior. a. What is the total amount of paint used on the house?b. If an additional 8 3 _ 5 gallons was used on the garage, what is the total amount of paint used on the house and garage?c. Rounding your answer from part b up to the next whole gallon, calculate the total cost of the paint if you paid $23 for each gallon.

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Week 2 Being mathematically precise about describing quantitative value distribution Measuring center: MEAN - Mean: the arithmetic average The sample mean, which is a statistic, is denoted by X´ (“ex- bar”): X +X +…+X ∑ X X= 1 2 = i n n where n is the sample size - The population mean, which is a parameter, is denoted by μ (“mu”): x1+x 2…+x N ∑ xi μ= N = N where N is the population size - The mean is sensitive/nonresistant to outliers, it is pulled towards the tail in a skewed distribution MEDIAN - The mean cannot be very useful when you have big outlier(s), so we use the median to measure center - To find the median 1. Reorder data value from smallest to largest 2. If there are an odd # of values, the median is the middle value 3. If there are an even # of values, the median is the average of the two middle values - The median is relatively resistant to outliers and skewness, median will not be pulled towards that tail as greatly as the mean in a skewed distribution IN GENERAL - In a symmetric distribution mean and median are almost the same - For bell distributions (symmetric), the mean is appropriate. - For distributions with severe outliers and skewness, use median as measure of center - Use the mean as a measure of center whenever possible b/c is uses data values exactly, so it’s more mathematically useful Measuring spread: STANDARD DEVIATION - Standard deviation: typical/standard deviatio

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Chapter SECTION II, Problem 34 is Solved
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Textbook: Contemporary Mathematics
Edition: 6
Author: Robert Brechner
ISBN: 9780538481267

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Tim Kenney, a painter, used 6 4 _ 5 gallons of paint on the exterior of a house and 9 3