Homework Help is Here – Start Your Trial Now!
Math
Probability
6. In a certain class, midterm scores average out to 70 with an SD of 10, and final exam scores average out to 60 with an SD of 15. The correlation between midterm scores and final exam scores is about 0.60. (a) Estimate the average final exam score for the students whose midterm scores were (1) 90 (1) 20 (1) 60 (iv) 70 (b) Plot your regression estimates and use them to draw the regression line. 7. In a study of the stability of IQ scores, a large group of individuals is tested once at age 18 and again at age 35. The following results are obtained. age 18: average scores 100, SD N 15 age 35: average score 100, SD 15, 0.80 (a) Estimate the average score at age 35 for all the individuals who scored 115 at age 18. (b) Predict the score at age 35 for an individual who scored 115 at age 18. 8. In one study, the correlation between the educational level of husbands and wives in a certain town was about 0.50; both averaged 12 years of schooling completed, with an SD of 3 years. (a) Predict the educational level of a woman whose husband has completed 18 years of schooling. (b) Predict the educational level of a man whose wife has completed 15 years of schooling. (c) Apparently, well-educated men marry women who are less well educated than themselves. But the womèn marry men with even less education. How is this possible? 9. In a study of a representative group of men, the correlation between height and weight was 0.43. One man in the study was both two SDS above average in height and two SDs above average in weight. His weight will be (1) larger than (ii) smaller than (iii) equal to the estimated average weight of all men of his height in the study. Explain your choice.

6. In a certain class, midterm scores average out to 70 with an SD of 10, and final exam scores average out to 60 with an SD of 15. The correlation between midterm scores and final exam scores is about 0.60. (a) Estimate the average final exam score for the students whose midterm scores were (1) 90 (1) 20 (1) 60 (iv) 70 (b) Plot your regression estimates and use them to draw the regression line. 7. In a study of the stability of IQ scores, a large group of individuals is tested once at age 18 and again at age 35. The following results are obtained. age 18: average scores 100, SD N 15 age 35: average score 100, SD 15, 0.80 (a) Estimate the average score at age 35 for all the individuals who scored 115 at age 18. (b) Predict the score at age 35 for an individual who scored 115 at age 18. 8. In one study, the correlation between the educational level of husbands and wives in a certain town was about 0.50; both averaged 12 years of schooling completed, with an SD of 3 years. (a) Predict the educational level of a woman whose husband has completed 18 years of schooling. (b) Predict the educational level of a man whose wife has completed 15 years of schooling. (c) Apparently, well-educated men marry women who are less well educated than themselves. But the womèn marry men with even less education. How is this possible? 9. In a study of a representative group of men, the correlation between height and weight was 0.43. One man in the study was both two SDS above average in height and two SDs above average in weight. His weight will be (1) larger than (ii) smaller than (iii) equal to the estimated average weight of all men of his height in the study. Explain your choice.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 2AGP
See similar textbooks
icon
Related questions
Question
not use ai please don't
6. In a certain class, midterm scores average out to 70 with an SD of 10, and final exam scores average out to 60 with an SD of 15. The correlation between midterm scores and final exam scores is about 0.60. (a) Estimate the average final exam score for the students whose midterm scores were (1) 90 (1) 20 (1) 60 (iv) 70 (b) Plot your regression estimates and use them to draw the regression line. 7. In a study of the stability of IQ scores, a large group of individuals is tested once at age 18 and again at age 35. The following results are obtained. age 18: average scores 100, SD N 15 age 35: average score 100, SD 15, 0.80 (a) Estimate the average score at age 35 for all the individuals who scored 115 at age 18. (b) Predict the score at age 35 for an individual who scored 115 at age 18. 8. In one study, the correlation between the educational level of husbands and wives in a certain town was about 0.50; both averaged 12 years of schooling completed, with an SD of 3 years. (a) Predict the educational level of a woman whose husband has completed 18 years of schooling. (b) Predict the educational level of a man whose wife has completed 15 years of schooling. (c) Apparently, well-educated men marry women who are less well educated than themselves. But the womèn marry men with even less education. How is this possible? 9. In a study of a representative group of men, the correlation between height and weight was 0.43. One man in the study was both two SDS above average in height and two SDs above average in weight. His weight will be (1) larger than (ii) smaller than (iii) equal to the estimated average weight of all men of his height in the study. Explain your choice.
Transcribed Image Text:6. In a certain class, midterm scores average out to 70 with an SD of 10, and final exam scores average out to 60 with an SD of 15. The correlation between midterm scores and final exam scores is about 0.60. (a) Estimate the average final exam score for the students whose midterm scores were (1) 90 (1) 20 (1) 60 (iv) 70 (b) Plot your regression estimates and use them to draw the regression line. 7. In a study of the stability of IQ scores, a large group of individuals is tested once at age 18 and again at age 35. The following results are obtained. age 18: average scores 100, SD N 15 age 35: average score 100, SD 15, 0.80 (a) Estimate the average score at age 35 for all the individuals who scored 115 at age 18. (b) Predict the score at age 35 for an individual who scored 115 at age 18. 8. In one study, the correlation between the educational level of husbands and wives in a certain town was about 0.50; both averaged 12 years of schooling completed, with an SD of 3 years. (a) Predict the educational level of a woman whose husband has completed 18 years of schooling. (b) Predict the educational level of a man whose wife has completed 15 years of schooling. (c) Apparently, well-educated men marry women who are less well educated than themselves. But the womèn marry men with even less education. How is this possible? 9. In a study of a representative group of men, the correlation between height and weight was 0.43. One man in the study was both two SDS above average in height and two SDs above average in weight. His weight will be (1) larger than (ii) smaller than (iii) equal to the estimated average weight of all men of his height in the study. Explain your choice.
Expert Solution
steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
College Algebra
College Algebra
Algebra
ISBN:
9781938168383
Author:
Jay Abramson
Publisher:
OpenStax
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt
Functions and Change: A Modeling Approach to Coll…
Functions and Change: A Modeling Approach to Coll…
Algebra
ISBN:
9781337111348
Author:
Bruce Crauder, Benny Evans, Alan Noell
Publisher:
Cengage Learning
College Algebra
College Algebra
Algebra
ISBN:
9781305115545
Author:
James Stewart, Lothar Redlin, Saleem Watson
Publisher:
Cengage Learning
College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS