A teacher believes that the number of days a student was absent from the class will affecthis/her final examination marks. To establish this relationship, the teacher took a randomsample of 8 students from his class. Data as given below:Student1458Number of days absent from classFinal examination marks21113182026328084747266584136What is the value of the coefficjent of correlation?Select one:a. 0.937b. 0.968C. -0.032d. -0.96831258

Answered: Image /qna-images/answer/83313771-f520-4e33-91cb-c0badb07ad74.jpg

Answered: A teacher believes that the number of…

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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Listed below are amounts of bills for dinner and the amounts of the tips that were left. Construct a scatterplot, find the value of the linear correlation coefficient r, and find the P-value of r. Determine whether there is sufficient evidence to support a claim of linear correlation between the two variables. Use a significance level of α=0.01. If everyone were to tip with the same percentage, what should be the value of r? Bill (dollars) 34.14 47.51 85.27 88.36 66.73 105.33 Tip (dollars) 3.51 5.55 16.44 17.42 6.69 13.97
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