The competitors in asbeauty contest are ranked by three Judges in the following order1st Jud e27'611435DIO9.2nd Jud e469811327103rd Jud e75109.116.Use the rank correlation coefficient to determine,which pair of Judges has the nearest approach to common taste in beauty.

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Answered: The competitors in asbeauty contest are…

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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The maximum weights (in kilograms) for which one repetition of a half squat can be performed and the jump heights (in centimeters) for 12 international soccer players are shown in the attached data table with a sample correlation coefficient r of 0.771. Remove the data entry for the international soccer player with a maximum weight of 180 kilograms and a jump height of 64 centimeters. Describe how this affects the correlation coefficient r.
Suppose that, for a sample of pairs of observations from two variables, the linear correlation coefficient, r , is positive. Does this result necessarily imply that the variables are positively linearly correlated? Explain.
It was discovered that 10 students' marks in two specific topics had a coefficient or rank correlation of 0.5. Later, it was determined that the student's difference in scores across two disciplines had been miscalculated, being recorded as 3, rather than 7. What should the proper value of the rank correlation coefficient be?
A sociologist claims that the success of students in college (measured by their GPA) isrelated to their family’s income. For a sample of 20 students, the correlation coefficientis 0.40. Using the .01 significance level, can we conclude that there is a positive correlation between the variables?
For a data set of brain volumes (cm3) and IQ scores of five males, the linear correlation coefficient is found and the P-value is 0.619. Write a statement that interprets the P-value and includes a conclusion about linear correlation. The P-value indicates that the probability of a linear correlation coefficient that is at least as extreme is nothing%, which is ▼ high, low, so there ▼ is is not sufficient evidence to conclude that there is a linear correlation between brain volume and IQ score in males. (Type an integer or a decimal. Do not round.)
A young professor found out from a senior professor that psychology students in St. Alex University tend to do good in their Social Science subject, claiming that historically, the mean grade of psych students in the said course is 1.50. Curious if this claim was true, the young professor took a random sample of 9 students who took Social Science subject. Before collecting data, he was undecided about his own claim because he knew of some students who did really good in the course but has also encountered others who did poorly. He found that their mean grade for the course is 1.35 with a standard deviation of 0.50. Use the Test of Significance Approach in testing the young professor’s claim. a. Estimate μ at 90% confidence interval. b. Between z and t, which is more appropriate to use given the data? Why? c. What are the chances that your estimate of μ was wrong? Describe and explain a potential source of error to your estimate. d. Holding % of CI constant, what can you do to lower…
Suppose the correlation coefficient between FEV for 100 sets of identical twins is .7, whereas the comparable correlation for 120 sets of fraternal twins is .38. Suppose the correlation coefficient between weight is .78 for the 100 sets of identical twins and .50 for the 120 sets of fraternal twins. *11.12 Test for whether the true correlation coefficients differ between these groups. Report a p-value.
A study of 20 worldwide financial institutions showed the correlation between their assets and profits to be .86. At the .05 significance level, can we conclude that there is a positive correlation in the population?
Suppose that 20 friends get together to go bowling. Also, suppose that each person’s score is 15 points higher for their second game than for their first game. Report the value of the correlation coefficient between game 1 score and game 2 scores, with one decimal place of accuracy.
A researcher hypothesizes that there is a positive correlation between the hours spent studying and the final exam score. They collect data from 20 students and compute the Pearson correlation coefficient, r, to be 0.75. Using a significance level of 0.05, test the hypothesis that there is a significant correlation between the hours spent studying and the final exam score.
Suppose the scatter diagram of a random sample of data pairs (?, ?) shows no linearrelationship between x and y. Do you expect the value of the sample correlationcoefficient r to be close to 1, –1, or 0? Explain.
For a data set of brain volumes (cm3) and IQ scores of eight males, the linear correlation coefficient is found and the P-value is 0.231. Write a statement that interprets the P-value and includes a conclusion about linear correlation.The P-value indicates that the probability of a linear correlation coefficient that is at least as extreme is [WHAT PERCENT] which is [LOW OR HIGH] so there [IS OR IS NOT] sufficient evidence to conclude that there is a linear correlation between brain volume and IQ score in males.(Type an integer or a decimal. Do not round.)

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The competitors in asbeauty contest are ranked by three Judges in the following order 1st Jud e 7 '6 11 4 3 DIO 9. 2nd Jud e 4 б 9. 8 11 2 7 10 3rd Jud e 7 5 10 9. 11 6. Use the rank correlation coefficient to determine,which pair of Judges has the nearest approach to common taste in beauty. LO