A statistics student records the number of hours spent studying, and the resulting scores for each...
A statistics student records the number of hours spent studying, and the resulting scores for each of two tests taken in the class during the semester. The data follow:
| Test #1 | Test #2 | |
| Numbers of hours spent | 6 | 9 |
| Exam Scores | 72 | 86 |
What is the exact value of the correlation coefficient r? Explain.
(pls show me how to solve this thanks)
Homework Answers
Add Answer to:
A statistics student records the number of hours spent studying,
and the resulting scores for each...
The table below gives the number of hours ten randomly selected students spent studying and their...
The table below gives the number of hours ten randomly selected students spent studying and their corresponding midterm exam grades. Using this data, consider the equation of the regression line, y ˆ = b 0 + b 1 x y^=b0+b1x , for predicting the midterm exam grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice,...
The table below gives the number of hours five randomly selected students spent studying and their...
The table below gives the number of hours five randomly selected students spent studying and their corresponding midterm exam grades. Using this data, consider the equation of the regression line. Ĵ = bo + bix. for predicting the midterm exam grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to...
The table below gives the number of hours ten randomly selected students spent studying and their...
The table below gives the number of hours ten randomly selected students spent studying and their corresponding midterm exam grades. Using this data, consider the equation of the regression line, yˆ=b0+b1x, for predicting the midterm exam grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line...
The table below gives the number of hours ten randomly selected students spent studyling and their...
The table below gives the number of hours ten randomly selected students spent studyling and their corresponding midterm exam grades. Using this data, consider the equation of the regression line, -bo +bix, for predicting the midterm exam grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression...
The table below gives the number of hours five randomly selected students spent studying and their...
The table below gives the number of hours five randomly selected students spent studying and their corresponding midterm exam grades. Using this data, consider the equation of the regression line, y = bo + b x, for predicting the midterm exam grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate...
The table below gives the number of hours seven randomly selected students spent studying and their...
The table below gives the number of hours seven randomly selected students spent studying and their corresponding midterm exam grades. Using this data, consider the equation of the regression line, yˆ=b0+b1xy^=b0+b1x, for predicting the midterm exam grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line...
The table below gives the number of hours ten randomly selected students spent studying and their...
The table below gives the number of hours ten randomly selected students spent studying and their corresponding midterm exam grades. Using this data, consider the equation of the regression line, yˆ=b0+b1xy^=b0+b1x, for predicting the midterm exam grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line...
The following indicates the number of hours that Johnny spent studying the week before each exam...
The following indicates the number of hours that Johnny spent studying the week before each exam in his classes along with the corresponding exam scores: Hours Studying: 4 5 8 12 15 19 Score on Exam: 54 49 60 70 81 94 Find the residual corresponding to the explanatory value of 8. a) 69.8263 b) −0.82 c) −69.8263 d) −126.34 e) 0.82
While the following simple random samples of Statistics test scores both come from populations that are...
While the following simple random samples of Statistics test scores both come from populations that are normally distributed, we do not know the standard deviation of the populations. The first simple random sample is drawn from the scores on Exam 1 for an on-line Statistics class and the second simple random sample is drawn from the scores on the exact same Exam 1 for an on-land (traditional) Statistics class. Using the null hypothesis that there is no difference in the...
The following data gives the number of hours 10 students spent studying and their corresponding grades...
The following data gives the number of hours 10 students spent studying and their corresponding grades on their midterm exams. 1 1.5 2.5 3 3.5 4.5 5 5.5 6 Hours Spent studying 0.5 Midterm Grades 63 66 69 72 75 18 84 90 93 96 Copy Data Step 3 of 3: Calculate the correlation coefficient, r. Round your answer to three decimal places. Answer How to Enter) 2 Points "ev Tables Keypad Keyboard Shortcuts
The table below gives the number of hours five randomly selected students spent studying and their corresponding midterm exam grades. Using this data, consider the equation of the regression line. Ĵ = bo + bix. for predicting the midterm exam grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to...
The table below gives the number of hours ten randomly selected students spent studyling and their corresponding midterm exam grades. Using this data, consider the equation of the regression line, -bo +bix, for predicting the midterm exam grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression...
The table below gives the number of hours five randomly selected students spent studying and their corresponding midterm exam grades. Using this data, consider the equation of the regression line, y = bo + b x, for predicting the midterm exam grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate...
The following data gives the number of hours 10 students spent studying and their corresponding grades on their midterm exams. 1 1.5 2.5 3 3.5 4.5 5 5.5 6 Hours Spent studying 0.5 Midterm Grades 63 66 69 72 75 18 84 90 93 96 Copy Data Step 3 of 3: Calculate the correlation coefficient, r. Round your answer to three decimal places. Answer How to Enter) 2 Points "ev Tables Keypad Keyboard Shortcuts
Most questions answered within 3 hours.
-
What mechanisms Drive speciation??
(I.e. what was Dawins theory on the orgin of species, and how...
asked 50 minutes ago -
The manager at a car assembly plant believes that the mean
assembly time for a car...
asked 1 hour ago -
Which of the following is true of electron capture?
A) It decreases the nuclide's mass number...
asked 3 hours ago -
Assuming an efficiency of 43.10%, calculate the actual yield of
magnesium nitrate formed from 114.9 g...
asked 3 hours ago -
The highly pathogenic bacterium Clostridium
perfringens causes gangrene, a disease that results in the
destruction of...
asked 5 hours ago -
In the context of situation analysis, which of the following is
a category for analysis in...
asked 5 hours ago -
In a study of the gas phase decomposition of sulfuryl chloride
at 600 K SO2Cl2(g)SO2(g) +...
asked 5 hours ago -
75 g of 2-propanol (C3H8O) and 25 g of pentane are mixed in a
200 mL...
asked 5 hours ago -
The 2800-turn coil in a dc motor has an area per turn of 1.1 ×
10-2...
asked 5 hours ago -
Draw a combinational logic circuit diagram with a symbol inside
the box for two I/P of...
asked 5 hours ago -
The cliché we use quite a lot in finance is: there is a need to
maximize...
asked 6 hours ago -
In class we discussed the addition of HCl to alpha pinene. Would
you expect one or...
asked 6 hours ago