MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Matrices
‘Matrices’ is the plural form of the word matrix, and it is basically a spreadsheet in the form of a box. In mathematics, various functions can be carried out with matrices. Generally, a matrix comes in the shape of a square or rectangle. The elements ar…
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Please answer A, B, & C. 

The average price of a college math textbook is $160 and the standard deviation is $22. Suppose that 12 textbooks are randomly chosen. Round all answers to 4 decimal places where possible. a. What is the distribution of x? ¤ - N( b. For the group of 12, find the probability that the average price is between $170 and $179. c. Find the first quartile for the average textbook price for this sample size. $ (round to the nearest cent) d. For part b), is the assumption that the distribution is normal necessary? O Yes O No o
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Transcribed Image Text:The average price of a college math textbook is $160 and the standard deviation is $22. Suppose that 12 textbooks are randomly chosen. Round all answers to 4 decimal places where possible. a. What is the distribution of x? ¤ - N( b. For the group of 12, find the probability that the average price is between $170 and $179. c. Find the first quartile for the average textbook price for this sample size. $ (round to the nearest cent) d. For part b), is the assumption that the distribution is normal necessary? O Yes O No o
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