+1-415-315-9853

info@mywordsolution.com

## Statistics

Regression equation and coefficient of determination.

1. Which of these following statements provides the best guidance for the model building?

a. If the value of r2 increases as more variables are added to the model, the variables should remain in the model, regardless of the magnitude of increase.

b. If the value of the adjusted r2 increases as more variables are added to the model, variables should remain in the model.

c. If the value of r2 increases as more variables are added to the model, variables should not remain in the model, regardless of the magnitude of increase.

d. If the value of the adjusted r2 increases as more variables are added to the model, variables should not remain in the model.

e. None of the statements provide accurate guidance.

2. A air conditioning and heating repair firm conducted a study to determine if the outside temperature could be used to predict the cost of an electric bill for homes during the winter months in Housion. Texas. The resulting regression equation was:

Y = 227.19 - 1.45X,  Where Y = monthly cost, X = outside air temperature

a. If the temperature averaged 48 degrees throughout December, what is the forecasted of December's electric bill?

b. If the temperature averaged 38 degrees throughout January, what is the forecasted cost of January electric bill?

Statistics and Probability, Statistics

• Category:- Statistics and Probability
• Reference No.:- M922920

Have any Question?

## Related Questions in Statistics and Probability

### A research concludes that the number of hours of exercise

A research concludes that the number of hours of exercise per week for adults is normally distributed with a mean of 3.5 hours and a standard deviation of 3 hours. Show all work. Just the answer, without supporting work, ...

### 1 does the average iq for residents of a state vary with

1. Does the average IQ for residents of a state vary with the amount that the state spends on education? Seven of the 50 U.S. states were randomly selected. The amount that each spent per student (in thousands of dollars ...

### Jim has weighted gpa of 384 his high school gpas are

Jim has weighted GPA of 3.84. His high school GPA's are normally distributed with a mean of 2.9 and a standard deviation of 0.5. Kim's high school uses unweighted GPA's and she has a GPA of 3.57. GPA's are also normally ...

### Two pollsters are conducting surveys to estimate the

Two pollsters are conducting surveys to estimate the proportion of Clarkston, Michigan citizens who support a bond issue to build a sports stadium. Both pollsters use the same methods; however, their sample sizes differ. ...

### A spinoff of the anti-war and civil rights movements of the

A spinoff of the anti-war and civil rights movements of the 1960s that affected women was? increased desire to return to the security of homes and families decreased political involvement. the birth of the women's libera ...

### 1 can single-case experimental designs be used to test the

1. Can single-case experimental designs be used to test the effects of various levels of an independent variable (as in a one-way group design)? Explain. 2. How many levels of the independent variable are there in an ABA ...

### Question please show your work by making a table fornbspd

Question: (Please show your work by making a table for  d and d-square) A motivational program was designed to increase the number of hours each student who took it studied per week. Eight randomly selected students were ...

### Question at the first state bank the average savings

Question: At the first state bank the average savings account balance in 2004 was \$1300 with a standard deviation of \$80. A random sample of 45 savings account balances for 2005 yielded a mean of \$1350. At the alpha=01 s ...

### The percentage of people who recycle their old phone books

The percentage of people who recycle their old phone books is 15.8% on average. If 240 people are randomly selected, what is the probability that more than 20% of them recycle their phone books?

### At a local college 316 of the male students are smokers and

At a local college, 316 of the male students are smokers and 474 are non-smokers. Of the female students, 70 are smokers and 630 are non-smokers. A male student and a female student from the college are randomly selected ...

• 4,153,160 Questions Asked
• 13,132 Experts
• 2,558,936 Questions Answered

## 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.

Ask Now Help with Problems, Get a Best Answer

### WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

### 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