negative correlationno correlationpositive correlation Match each scatterplot shown below with the best desciption of its correlation.8OOoooSelect an answerSelect an answerSelect an answer

Given dataThree scatter plots are given

Answered: Match each scatterplot shown below with…

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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Overhead Width of seal 7.2 7.4 9.8 9.4 8.8 8.4 Weight of seal 106 134 225 200 180 171 Find the value of the linear correlation coefficient r 0.678 0.985 0.875 0.789
During a period of 11 years 800800 of the people selected for grand jury duty were sampled, and 6262% of them were immigrants. Use the sample data to construct a 99% confidence interval estimate of the proportion of grand jury members who were immigrants. Given that among the people eligible for jury duty, 65.965.9% of them were immigrants, does it appear that the jury selection process was somehow biased against immigrants?
The given data represent the total compensation for 10 randomly selected CEOS and their company's stock performance in 2009. Analysis of this data reveals a correlation coefficient of r=-0.1766. What would be the predicted stock return for a company whose CEO made $15 million? What would be the predicted stock return for a company whose CEO made $25 million? Click the icon to view the compensation and stock performance data. Click the icon to view a table of critical values for the correlation coefficient. What would be the predicted stock return for a company whose CEO made $15 million? % (Type an integer or decimal rounded to one decimal place as needed.) CEO Compensation and Stock Performance Compensation Stock (millions of dollars) Return (%) 26.42 12.84 19.78 13.52 11.99 11.63 26.33 15.23 17.23 14.18 6.16 30.79 32.11 79.78 - 8.19 2.46 4.75 11.24 3.62 11.36 D - X
Listed below are paired data consisting of amounts spent on advertising (In millions of dollars) and the profits (in millions of dollars). Determine if there is a significant linear correlation between advertising cost and proft. Use a significance level of 0.05 and round all values to 4 decimal places. Advertising Cost Proft 25 4 28 20 6. 21 7. 21 8 22 6. 20 10 23 Ho: p 0 Ha: p z 0 Find the Linear Correlation Coefficient Find the p-value p-value %3D The p-value is Greater than a O Less than (or equal to) a The p-value leads to a decision to O Reject Ho O Do Not Reject Ho
Scenario: Is there a relationship between number of hours studied (X) and final exam scores (Y)? Question: What is the most appropriate statistical test to conduct given this scenario? Pearson's r correlation Spearman correlation Point Biserial correlation Phi correlation
Español Oil and Gas Prices The average gasoline price per gallon (in cities) and the cost of a barrel of oil are shown below for a random selection of weeks in 2015. Oil ($) 66.30 47.23 53.72 43.17 61.92 84.25 Gasoline ($) 2.838 2.606 2.719 2.556 2.645 2.964 Send data to Excel olo The correlation coefficient for the data is r=0.936 and a=0.01. Should regression analysis be done? O The regression analysis should not be done. O The regression analysis should be done. Find the equation of the regression line. Round the coefficients to at least three decimal places. y'=a+bx a = b = Find the cost of gasoline when oil is $60 a barrel. Round the answer to st least three decimal places. When oil is $60 a barrel, gas costs$ per gallon. Submit Assignment Continue O 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use| Privacy Center | Accessibility MacBook Air DIL F11 F10 80 888 F9 FB F7 F6 F5 esc F4 F3 F2 F1 & %23 $ 山园
Fireworks and Injuries These data were obtained for the years 1993 through 1998 and indicate the number of fireworks (in millions) used and the related injuries. Fireworks in use x Related injuries y 87.1 12,600 117 12,500 115 10,900 118 7800 113 7000 Correlation coefficient=? Critical Value =?
x = number of traffic tickets y = Cost of auto insurance In a test of linear correlation produces a P-value of 0.578. At the 5% level of significance will the correlation be useful in using x to predict y? Group of answer choices Yes Not enough information No It depends None of these
[ CORRELATION ANALYSIS Determine the relationship between the number of hours students spent per week on studying the lessons on the modules on Statistics and Probability and their obtained grades for the grading period. A random sample of 10 students is selected. The data obtained are shown in the table. Calculate the Pearson's sample correlation coefficient and interpret the result. Number of hours studying Grade (y) x² y² Student xy per week (x) 4 96 2 83 3 81 4 79 5 4 88 3 87 3 90 1 77 85 82 Exy= Computation: Interpretation: 6 8 9 10 Σχ= 2 2 Σy= Ex²= Ey²=
Oil and Gas Prices The average gasolinep er gallon (in cities) and the cost of a barrel of oil are shown below for a random selection of weeks in 2015. Oil ($) 54.77 47.27 46.70 77.96 47.05 82.92 Gasoline ($) 2.543 2.366 2.639 3.059 2.412 2.958 Send data to Excel The correlation coefficient for the data is r=0.919 and a =0.01. Should regression analysis be done? OThe regression analysis should not be done. O The regression analysis should be done. Find the equation of the regression line. Round the coefficients to at least three decimal places. y'%3a+bx a = b = Find the cost of gasoline when oil is $64 a barrel. Round the answer to at least three decimal places. When oil is $64 a barrel, gas costs$ per gallon.

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Match each scatterplot shown below with the best desciption of its correlation 8 800 89 00 O ooo 8 Select an answer Select an answer Select an answer