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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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Consider the following data on price ($) and the overall score for six stereo headphones tested by a certain magazine. The overall score is based on sound quality and effectiveness of ambient noise reduction. Scores range from 0 (lowest) to 100 (highest).

Brand	Price($)	Score
A	180	74
B	150	69
C	95	61
D	70	56
E	70	42
F	35	28

(a)

The estimated regression equation for this data is

ŷ = 26.204 + 0.288x,

where x = price ($) and y = overall score.

Find the value of the test statistic. (Round your answer to three decimal places.)

Find the p-value. (Round your answer to four decimal places.)

(b)

Test for a significant relationship using the F test. Use α = 0.05

Find the value of the test statistic. (Round your answer to two decimal places.)

(c)

Show the ANOVA table for these data. (Round your p-value to three decimal places and all other values to two decimal places.)

Find the p-value. (Round your answer to three decimal places.)

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