Gabriel134
22.05.2020 •
Mathematics
A statistics practitioner in a large university is investigating the factors that affect the salary of professors. He wondered if evaluations by students are related to salaries. To this end, he collected 100 observations on: y = Annual salary (in dollars) x = Mean score on teaching evaluation To accomplish his goal, he assumes the following relationship: y = β(0) + β(1)x + ε Then, using Excel’s Data Analysis, he obtained the following result. R2=0.23 Coefficient Standard Error Intercept 25675.5 11393 x 5321 2119
The estimated regression model is given by y hat= b0+b1x = 25675.5 + 5321* x. What is the interpretation of b1?
a. When the mean score on teaching evaluation increases by 1, the average annual salary increases by 25675.5 dollars.
b. When the mean score on teaching evaluation increases by 1, the average annual salary increases by 5321 dollars.
c. When annual salary increases by a dollar, the mean score on teaching evaluation increases by 5321.
d. When annual salary increases by a dollar, the mean score on teaching evaluation increases by 25675.5.
Solved
Show answers
More tips
- H Health and Medicine Angina: Causes, Symptoms, and Treatment...
- H Health and Medicine What vaccines do children need?...
- H Health and Medicine Reasons for the Appearance of Warts: Everything You Need to Know...
- A Art and Culture How to Learn Screaming: Step-by-Step Guide for Beginners...
- H Health and Medicine Contraceptive Pills After 35: The Importance Of Choosing The Right Medication...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- C Computers and Internet How to Learn to Type Fast?...
Answers on questions: Mathematics
- M Mathematics What does it mean what is the value of a number...
- M Mathematics Express the number using scientific notation: 57,000,000 plz a)5.7 x 107 b) 5.7 x 106 c)57 x 106...
- M Mathematics Ineed im desperate i ll give 30 points to anyone who answers. fill in the missing pieces of the problem using distributive property. you will need to get an answer...
- M Mathematics The swimming pool at spring valley high school is a rectangle with a width of 75 meters and a length of 35 meters. around the perimeter of the pool is a tiled floor...
- M Mathematics You are given a side length of 7 cm how many equilateral triangle s can you construct using this information?...
- M Mathematics Solving special systems -y=4x+1 y+4x+y=2...
- M Mathematics 25 points what is the sum of the series?...
- M Mathematics Giving 15 points! need asap. you....
- M Mathematics Solve for the variable. x ÷ -9 = -7 a. -16 b. -2 c. 0.8 d. 63...
- M Mathematics What is the justification for each step in solving the inequality? 75x+35≥7(11x+9)+475x+35≥7(11x+9)+4 75x+35≥7(11x+9)+475x+35≥7(11x+9)+4 75x+35≥77x+63+475x+35≥77x+63+4...
Ответ:
b. When the mean score on teaching evaluation increases by 1, the average annual salary increases by 5321 dollars.
Step-by-step explanation:
The parameter b1 is the slope of the linear regression model. It has a value of 5,321 in this model.
It also represents the rate of variation of the salaries (predicted y, the dependendant or response variable) to a variation of one unit in the evaluation score (x, the independente variable).
Then, for each unit that the evaluation score (x) increases, the annual salary is predicted to increase in $5,321.
The answer is:
b. When the mean score on teaching evaluation increases by 1, the average annual salary increases by 5321 dollars.
Ответ:
it would be 731.52 cm.
Step-by-step explanation:
hope this helped