On an international exam, students are asked to respond to a variety of background questions. For the 41 nations that participated in the exam, the correlation between the percentage of items answered in the background questionnaire (used as a proxy for student task persistence) and mean score on the exam was 0.822. Does this suggest there is a linear relation between student task persistence and achievement score? Write a sentence that explains what this result might mean.Click the icon to view the critical values table.**Does this suggest there is a linear relation between student task persistence and achievement score? Choose the best response below.**- A. No, since |0.822| is less than the critical value for 30.- B. Yes, since |0.822| is less than the critical value for 30.- C. No, since |0.822| is greater than the critical value for 30.- D. Yes, since |0.822| is greater than the critical value for 30.**What does this result mean?**- A. Countries in which students answered a lesser percentage of items in the background questionnaire tended to have higher mean scores on the exam.- B. Countries in which students answered a greater percentage of items in the background questionnaire tended to have higher mean scores on the exam.- C. There is no linear relation between countries in which students answered a greater percentage of items in the background questionnaire and higher mean scores on the exam.- D. Countries in which students cheated on the exam also cheated on the items in the background questionnaire.Click to select your answer. ### Critical Values for Correlation CoefficientThis table provides critical values for the correlation coefficient, denoted as $ n $. The correlation coefficient measures the strength and direction of a linear relationship between two variables.| n | Critical Value ||----|----------------|| 3 | 0.997 || 4 | 0.950 || 5 | 0.878 || 6 | 0.811 || 7 | 0.754 || 8 | 0.707 || 9 | 0.666 || 10 | 0.632 || 11 | 0.602 || 12 | 0.576 || 13 | 0.553 || 14 | 0.532 || 15 | 0.514 || 16 | 0.497 || 17 | 0.482 || 18 | 0.468 || 19 | 0.456 || 20 | 0.444 || 21 | 0.433 || 22 | 0.423 || 23 | 0.413 || 24 | 0.404 || 25 | 0.396 || 26 | 0.388 || 27 | 0.381 || 28 | 0.374 || 29 | 0.367 || 30 | 0.361 |#### Explanation:The table lists sample sizes ($ n $) from 3 to 30 alongside their corresponding critical values for the correlation coefficient. These critical values are thresholds which the sample correlation coefficient must exceed in order to be considered statistically significant at a certain confidence level. The values decrease as the sample size increases, reflecting the fact that larger samples can detect smaller effects with statistical significance.

Name: On an international exam, students are asked to respond to a variety
Uploaded: 2024-03-20T07:06:16.000Z
Channel: Bartleby
Description: On an international exam, students are asked to respond to a variety of background questions. For the 41 nations that participated in the exam, the correlation between the percentage of items answered in the background questionnaire (used as a proxy

Given that the correlation is r=0.822. Correlation: It measures the linear relationship between two…

Math

Statistics

On an international exam, students are asked to respond to a variety of background questions. For the 41 nations that participated in the exam, the correlation betwe the percentage of items answered in the background questionnaire (used as a proxy for student task persistence) and mean score on the exam was 0.822. Does this suggest there is a linear relation between student task persistence and achievement score? Write a sentence that explains what this result might mean. E Click the icon to view the critical values table. Does this suggest there is a linear relation between student task persistence and achievement score? Choose the best response below. O A. No, since |0.822| is less than the critical value for 30. O B. Yes, since |0.822| is less than the critical value for 30. O C. No, since |0.822| is greater than the critical value for 30. O D. Yes, since |0.822| is greater than the critical value for 30. What does this result mean? O A. Countries in which students answered a lesser percentage of items in the background questionnaire tended to have higher mean scores on the exam.

On an international exam, students are asked to respond to a variety of background questions. For the 41 nations that participated in the exam, the correlation betwe the percentage of items answered in the background questionnaire (used as a proxy for student task persistence) and mean score on the exam was 0.822. Does this suggest there is a linear relation between student task persistence and achievement score? Write a sentence that explains what this result might mean. E Click the icon to view the critical values table. Does this suggest there is a linear relation between student task persistence and achievement score? Choose the best response below. O A. No, since |0.822| is less than the critical value for 30. O B. Yes, since |0.822| is less than the critical value for 30. O C. No, since |0.822| is greater than the critical value for 30. O D. Yes, since |0.822| is greater than the critical value for 30. What does this result mean? O A. Countries in which students answered a lesser percentage of items in the background questionnaire tended to have higher mean scores on the exam.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Members of the student council are seling bagels during each class period of the school day for a fundrasier. Yu-na made a scatter plot to see if there was a relationship between the class period and the number of bagels sold.Yu-na draws a line of best fit. Which of these lines is the best model for the data?
A health organization collects data on hospitals in a large metropolitan area. The scatterplot shows the relationship between two variables the organization collected: the number of beds each hospital has available and the average number of days a patient stays in the hospital (mean length of stay). Which statement best explains the relationship between the variables shown? Hospitals with more beds cause longer lengths of stay. The size of the hospital does not appear the have an influence on length of stay. More complex medical cases are often taken by larger hospitals, which increases the lengths of stay for larger hospitals. More complex medical cases are often taken by larger hospitals, which decreases the lengths of stay for larger hospitals.
The following graph is an ogive of a standardized test's scores. The vertical axis in an ogive is the cumulative relative frequency and can also be interpreted as a percentile. Complete parts a through c. Find and interpret the percentile rank of a test score with a value of 130. A test score of 130 corresponds to the enter your response hereth percentile rank since this percentage of test scores are greater than or equal to greater than less than or equal to less than a test score with a value of 130.
A study of new home prices was conducted in a neighborhood of 2000 homes. The median price of a new home is reported to be $172,400 and the mean price is reported to be $196,000. describe the distribution of new home prices, explaining the relationship between the given median and mean. How many new homes cost more than $172,400?
Suppose that the mean score of a class of 34 students was 79. The 15 male students in the class had a mean score of 62. What was the mean score for the 19 female students? Mean Score for Female Students = preview answers
A study was undertaken to see how accurate food labeling for calories on food that is considered reduced calorie. The group measured the amount of calories for each item of food and then found the percent difference between the measured and labeled amount of calories. The group also looked at food that was nationally advertised, regionally distributed, or locally prepared. Do the data indicate that at least one of the mean percent differences between the three groups is different from the others? The data is summarized in the table below. National Mean Standard Deviation Sample Size Local -2.1 Regional 27.1667 143.125 Fill in the hypotheses below: Ho: Select an answer Ha: Select an answer 10.3257 20.797 53.5922 20 12 8
a set of 50 data values has a mean of 15 and a A set of 50 data has a mean of 15 and a varience of 36. find the standard score of a data value =21
Mrs. Kelley noticed a strong positive correlation between the hours students said that they studied for a test and their scores on the test. Which fact would lead you to believe that the relationship between studying and test scores is one of causation and not correlation?
In what situations would you see a large difference between the mean and median of a data set? Give specific situations where that may be the case, and explain your reasoning.
Select whether the value of each statistic for the distances of the stars from Earth increases, decreases, or stays the same when the data point is removed.
A student earned grades of 74, 75, 79, and 91 on her four regular tests. She earned a grade of 75 on the final exam and 84 on her class projects. Her combined homework grade was 86. The four regular tests count for 40% of the final grade, the final exam counts for 30%, the project counts for 10%, and homework counts for 20%. What is her weighted mean grade? 80.0 80.6 80.5 81.1
In a data set with 25 scores, if the value 16 occurs 12 times, what is its relative frequency?