Question

Suppose we have collected the midterm and final scores of 200 students in a Statistics class,...

Suppose we have collected the midterm and final scores of 200 students in a Statistics class, and we observed that the scatter plot of final scores versus midterm scores is roughly linear. Suppose the average midterm score is 76, with SD 12, and the average final score is 71, with SD 10. Suppose the correlation coefficient between midterm and final scores is 0.6.
Use the regression line, or an equivalent regression procedure, to predict the final score for someone who got 83 on the Midterm.

(please show work on how got the answer)

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
3. A statistical analysis is made of the midterm and final scores in a large course,...
3. A statistical analysis is made of the midterm and final scores in a large course, with the following results: (20 points) Average midterm score = 65, SD = 10, Average final score = 65, SD = 12, r = 0.6 The scatter diagram is football shaped. a. About what percentage of the class final scores above 70? ((5 points) b. A student midterm was 75. Predict his final score (5 points) c. Suppose the percentile rank of midterm score...
(i) Suppose for a sample of 12 students, the average scores in Math and English are...
(i) Suppose for a sample of 12 students, the average scores in Math and English are 85 and 73 respectively, and the regression equation relating the Math scores (x) to English scores (y) is given by:  y′=0.7+0.85x. Assuming that there is a significant linear correlation between the Math and English scores, predict the English score of a student who scored 91 in Math. Round your answer to the nearest whole number. (ii) What would the answer in part (i) be if...
Q3 – Normal Distribution (10 pts). suppose we have 10 students with the following grades: 34,...
Q3 – Normal Distribution (10 pts). suppose we have 10 students with the following grades: 34, 67, 45, 87, 75, 49, 68, 59, 70, 74 Find sum, average, SD, Z-score what is the probability of a student to get 71 what is the probability to get a grade between 60 and 70 what is the probability to get a grade > 77
9. A lot of corn grows in Iowa. For several years, farmers have kept track of...
9. A lot of corn grows in Iowa. For several years, farmers have kept track of the amount of rainfall (in inches) and the amount of corn produced (in bushels per acre). A strong and linear relationship has been observed between these variables. When a regression equation is constructed in order to predict amount of corn produced based on rainfall, it is found that the equation has an intercept of 89.54 and a slope of 0.13. We can conclude from...
1. For a pair of sample x- and y-values, what is the difference between the observed...
1. For a pair of sample x- and y-values, what is the difference between the observed value of y and the predicted value of y? a) An outlier b) The explanatory variable c) A residual d) The response variable 2. Which of the following statements is false: a) The correlation coefficient is unitless. b) A correlation coefficient of 0.62 suggests a stronger correlation than a correlation coefficient of -0.82. c) The correlation coefficient, r, is always between -1 and 1....
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT