Suppose an environmental agency would like to investigate the relationship between the engine size of sedans and the miles per gallon​ (MPG) they get. The accompanying table shows the engine size in cubic liters and rated miles per gallon for a selection of sedans. Use this information to complete the parts below.

Engine_Size, MPG
2.5, 25
2.1, 31
2.6, 25
3.3, 22
3.6, 23
2.1, 28
2.5, 23
2.1, 29
3.7, 21

a) Construct a scatter plot for the data.

b) Calculate the slope and​ y-intercept for the regression equation. ​(Round to three decimal places as​ needed.)

c) Because the slope is (positive, negative) it can be concluded that one cubic liter increase in engine size will (increase, decrease) the mpg by an average of ________ mpg. ​(Round to three decimal places as​ needed.)

d) Predict the MPG for a sedan with a 2.5​-liter engine. ​(Round to one decimal place as​ needed.)

e) Calculate the SST. (Round to three decimal places as​ needed.)

f) Calculate the SSE. (Round to three decimal places as​ needed.)

g) Calculate the SSR. (Round to three decimal places as​ needed.)

A highway department is studying the relationship between traffic flow and speed. The following model has been hypothesized.

where y=b0+b1x+b2x2

y=traffic flow in vehicles per hour
x=vehicle speed in miles per hour

The following data were collected during rush hour for six highways leading out of the city.

a. Use the data to compute the coefficients of this estimated regression equation (to 4 decimals). (Enter negative value as negative number).

b0=

b1=

b2=

(Create the x2 variable first using Data/Transform Data/Square.)

b. Using a=.01, test for a significant relationship.

f= (to 4 decimals)

p-value    (to 4 decimals)

The relationship - Select your answer -is notisItem 6  significant.

c. Estimate the traffic flow in vehicles per hour at a speed of 39 miles per hour (to 2 decimals).

99%The estimated value is    (to 2 decimals)

99% Confidence interval         (to 2 decimals)

Prediction interval         (to 2 decimals)

An airport shuttle service wants to determine the length of time it would take to transport passengers from various locations to a major metropolitan airport during nonpeak hours. A sample of 16 trips on a particular day during nonpeak hours indicates the following:

1. Using Excel, create a scatter diagram for distance and time. This what should be your Y (dependent) variable and what should be your X (independent) variable. No need to submit the results.

2. Calculate the covariance between distance and time using Excel. What is its value?

3. Calculate the correlation coefficient. What is its value?

4. Calculate the least-squares regression equation using distance as an independent variable and time as a dependent variable______ Intercept:_____

5. Is the intercept coefficient significant at the 5% level? Yes or No?

6. Is the slope coefficient significant at the 5% level? Yes or No?

1.The space probe Voyager 2 flew past Neptune in 1989 at a speed of 38,000 miles/hr. Then, fuel almost entirely depleted, it headed out of the Solar System towards the emptiness of interstellar space (no gravity or friction). It is still trillions of miles away from the nearest star. Will Voyager 2 ever stop, and in any case, what will happen to it in, let's say, the next few weeks? Explain.

2.The present understanding is that the magnetism of the atom, and even of a bar magnet and the Earth, are all generated by electric current loops.

True

False

3.A rose looks red because the rose:

(A)is transparent to red light only

(B)reflects red light only

(C)absorbs red light only

4.You measure light from a distant galaxy and discover that the light has a Doppler red-shift. In which direction is the galaxy moving, relative to you?

5.The galactic red-shifts, the CMB (Cosmic Microwave Background), and the fact that the universe is 25% Helium are all important bits of evidence showing that something major happened at the beginning of time. What is this big event called?

The Toyota Camry is one of the best-selling cars in North America. The cost of a previously owned Camry depends upon many factors, including the model year, mileage, and condition. To investigate the relationship between the car’s mileage and the sales price for a 2007 model year Camry, the following data show the mileage and sales price for 19 sales (PriceHub website, February 24, 2012). Suppose that you are considering purchasing a previously owned 2007 Camry that has been driven 60,000 miles. What price you would offer to the seller and why?

Include discussion of the scatter diagram, regression equation, test for significant relationship, coefficient of determination, correlation coefficient, interpretation of the slope of the regression equation, 95% prediction interval and the 95% confidence interval of the mean sales price given mileage.

New Retirementality Chapters 9 - 10 - 11

Chapter 9: A New Mindset: Retire on Purpose

“Too many people die with their music still in them.” -Oliver Wendell Holmes

1a. The revolution of retirement planning for the purposeful retiree is:

A. the most fertile period of life for the meaningful pursuit

B. a time to enjoy one’s life accomplishments

C. a time to see the world

D. take it easy and relax

Chapter 10: The New Meaning of Re-tired: Your Next 100,000 Miles

“Do not think of retiring until the world will be sorry to see you retire.” -Samuel Johnson

1b. Your next 100,000 miles will depend on you taking life easy and restraining activities to have a long happy life.

A. True. B. False

Chapter 11: Redefining Rich: Bridging the Gap between Means and Meaning

“To allow me to do what I want to do every day” -Warren Buffett on the meaning of money

1c. Rich means?

A. Deciding what gives me meaning.

B. Able to articulate the correct way to preserve my money

C. “A” and “B”

D. “A” primarily

Toby wants to calculate her COGS for a fertilizing job she did last week. She used 40 pounds of fertilizer that she bought in bulk ($1,000 for 2,000 pounds). It took her employee 1.5 hours to spread the fertilizer (she is paid $15/hour) with the motorized spreader. Toby paid $4,000 for the spreader three years ago and it is estimated to last 10 years or 10,000 pounds. To get to the job site, a company truck and trailer was used (cost: $40,000 expected to last 10 years or 200,000 miles, the site visit was 30 miles round trip). This was the only use of the truck, trailer, and spreader for that day. Additional employee costs include 10% payroll tax and $730 per year in worker’s compensation insurance. You may assume an employee works 2000 hours per year.

Construct a balance sheet and income statement and include calculations done by formula within Excel (include cell references). Separate and label the parts of the calculation as Direct Material (DM), Direct Labor (DL), or Overhead (OH). Please make two calculations comparing the straight-line depreciation method with the units of production method.

For Exercises 49–52, identify the independent and dependent variables for each study.

49.A study was conducted to determine if crocodiles raised in captivity (i.e., in a zoo) grew faster than crocodiles living in the wild. Identify the explanatory variable and the outcome variable.

50.People who walk at least 3 miles a day are randomly selected, and their blood triglyceride levels are measured in order to determine if the number of miles that they walk has any influence on these levels.

51.In an article in the British Journal of Nutrition, two types of mice were randomly selected. One group received a thyme supplement for a specific time, while another group was used as a control group and received no supplements. The brains of the mice were then analyzed, and it was found that the brains of the group of mice that received the thyme supplements had antioxidant levels similar to those of younger mice. It was concluded that the thyme supplement increased the antioxidants in the brains of the mice.

52.A study was conducted to determine if workers who had a flexible work schedule had greater job satisfaction than those workers who worked a regular nine-to-five work schedule. Independent variable—type of work schedule.

Question 1

A local government board hired you to recommend which of the two possible sites should be chosen for a new recycling facility. Location A is much closer to the city center, and thus the average hauling distance would only be 2 miles, while Location B being outside of the city would result in an average hauling distance of 5 miles. Public funds will have to be used to pay for the leasing cost of the site, which would be $50,000 a year for Location A and $10,000 a year for Location B, as well as for the hauling cost which is $200 per mile for each trip. Assuming 3,000 trips will be made per year, which location should be chosen based on the overall cost?

Question 2 :

Metal ABC produces sheets of metal. Its fixed cost in year 2019 is $1,000,000. The variable cost is $400 per sheet. a. Find the break-even quantity assuming the selling price is $500 per sheet. b. Find the price and quantity that will result in maximum profit, assuming the demand function is ? = $10,000 − 6?. How much profit will be made using the profit-maximizing price and quantity values?

JAVA please

Program 4: Is there a Prius version? Did you know that the average Boeing 747 airplane uses approximately 1 gallon of fuel per second? Given the speed of the airplane, that means it gets 5 gallons to the mile. No, not 5 miles to the gallon, 5 gallons to the mile. You may be questioning why such a horribly inefficient machine is allowed to exist, but you’ll be happy to find out that, because this airplane hold 568 people, it averages about 0.01 gallons per person – (100 miles per gallon per person). Your job is to design (pseudocode) and implement (source code) a program that asks the user for a distance the plane has to fly (i.e. the length of the trip) and also asks the cost of jet fuel (which is currently $1.80 per gallon). The program should then calculate the total fuel charges to make the trip. Next, ask the user how many people will fly, as well as the average cost of a ticket. Finally, print the total profit made (or lost) and the average gas mileage per person. Document your code and properly label the input prompts and the outputs as shown below.