Question 1176233: An owner of the business is trying to predict the sales he will earn, given the amount he spends on advertisement. From the information given below, answer the following question:- The average of advertisement is $5440, and the advertisement average is $ 125000. The covariance between the two variables is $ 43955555.6. The standard deviation of advertisement and Sales is $ 2852.36744
and $ 19442.22 respectively.
Question 9 (2 points)
What is the slope of the equation?
Question 9 options:
1.57
2260.83
5.4
15410.201
3.43
Question 10 (2 points)
What is the intercept of the equation?
Question 10 options:
$85500
$1
$95609
$ -669885
Section D
Answer the question
Question 11 (3 points)
An owner of a pharmaceutical company is planning to predict the profits of his company by the amount he spends on research and development activities. The sum of squared difference between the actual profits and average profits is 901298314.5. The sum of squared difference between the actual profits and expected profits after fitting the regression line is 442445375.8. What is the R square of the model?
Question 11 options:
49.08998%
88.03%
99.07%
50.91%
55.34%
Answer by ikleyn(53751)   (Show Source):
You can put this solution on YOUR website! .
One and ONLY ONE problem/question per post.
It is the RULE, the POLICY and the REQUIREMENT of this forum.
It is written in this page
https://www.algebra.com/tutors/students/ask.mpl?action=ask_question&topic=Equations&return_url=http://www.algebra.com/algebra/homework/equations/
from which you post your problems.
It is assumed that you read these rules before posting.
It is also assumed that you do understand what is written in that page and follow the rules.
Those who violate them, work against their own interests.
|
|
|
