+1-415-315-9853

info@mywordsolution.com

## Statistics

Estimate the regression equation and correlation coefficient.

1. The following results were obtained from a simple regression analysis:
= 37.2895-(1.2024)X r2=.6744, Sb1=.2934

For each unit change in X (independent variable), the estimated change in Y (dependent variable) is equal to

a. -1.2024
b. 6744
c. 37.2895
d. 2934

2. The following results were obtained from a simple regression analysis:

= 37.2895-(1.2024)X r2=.6744 Sb1=.2934

When X (independent variable) is equal to zero, the estimated value of Y (dependent variable) is equal to:

a. -1.2024
b. 6744
c. 37.2895
d. 2934

3. The following results were obtained from a simple regression analysis:

= 37.2895-(1.2024)X r2=.6744 Sb1=.2934 ____________ is the proportion of the variation describeed by the simple linear regression model:

a. -1.2024
b. .6744
c. 37.2895
d. .2934

4. For the same set of observations on the specified dependent variable two different independent variables were used to develop two separate simple linear regression models. A portion of the results is presented below. Based on the results given above, we can conclude that:

a. A prediction based on Model 1 is better than a prediction based on Model 2
b. A prediction based on Model 2 is better than a prediction based on Model 1
c. There is no difference in the predictive ability between Model 1 and Model 2
d. There is not sufficient information to determine which of the two models is superior for prediction purposes

5. The local grocery store wants to find out the daily sales in dollars. The manager believes that the amount of newspaper advertising significantly affects the store sales. He randomly selects 7 days of data consisting of daily grocery store sales (in thousands of dollars) and advertising expenditures (in thousands of dollars). The Excel/Mega-Stat output given above summarizes the results of regression model.

What is the estimated simple linear regression equation?

a. 7.9682+1.667 X
b. 63.333+6.667 X
c. 7.948+4.000 X
d. 11.547+1.667 X
e. 6.667+63.333 X

Statistics and Probability, Statistics

• Category:- Statistics and Probability
• Reference No.:- M922864

Have any Question?

## Related Questions in Statistics and Probability

### Questiona mining company has gained the drilling rights at

Question: A mining company has gained the drilling rights at two sites A and B. Each cost €100,000 each. Based on past experience they have estimated the chances of a successful drill as follows: P(A) = 0.6, P(B) = 0.5 I ...

### A women in the sample on average were as healthy as people

(a) Women in the sample, on average were as healthy as people nationally from both a physical and mental health perspective as indicated by the SD deviation of 10.0 and a mean of 50.0 based on the national average. (b) T ...

### Examine the history of american party politics from the

Examine the history of American party politics from the Great Depression through the 1990s. Trace the evolution of the major political parties, their policies, and their constituencies during this period.

### Do men and women select different breakfasts the breakfasts

Do men and women select different breakfasts? The breakfasts ordered by randomly selected men and women at a popular breakfast place is shown inTable 11.55. Conduct a test for homogeneity at a 5% level of significance. F ...

### Your statistics teacher knowing the power of sampling

Your statistics teacher, knowing the power of sampling, decides to use only 3 of your 5 quiz grades in assigning your grade for the course, chosen at random. Your quiz average using all 5 quizzes is 81.6, with a standard ...

### Imagine that you are a college professor you notice that

Imagine that you are a college professor. You notice that fewer students appear to attend class on Friday afternoons when the weather is warm than when it is cold outside. To test your hunch, you collect data regarding o ...

### Box a has 2 green and 5 blue marbles in it box b has 9

Box A has 2 green and 5 blue marbles in it. Box B has 9 green and 6 blue marbles in it. A marble is drawn from Box A, transferred to Box B, and then a marble is drawn from Box B. What is the probability a blue marble was ...

### A coffee store owner knows that a customer gets a coffee in

A coffee store owner knows that a customer gets a coffee in 35% of the store's transactions. If we take a random sample of 300 customers, what is the probability that less than 32% of them buy a coffee? (A) 0.1292 (B) 0. ...

### In a health insurance experiment performed in a super

In a health Insurance experiment performed in a Super Specialty Hospital 4 types of insurance categories patients are expected to occur in the proportion of 9: 3: 3: 1. The observed frequencies are 891 Insured and Surgic ...

### 1 explain how you would use a manipulation check to

1. Explain how you would use a manipulation check to determine whether you successfully manipulated room temperature in a study of temperature and aggression. 2. Distinguish between an independent variable and a subject ...

• 13,132 Experts

## Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

### Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

### Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

### Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

### Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

### Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen