Question

Refer to the Lincolnville School bus data 2015. Develop a regression equation that expresses the relationship...

Refer to the Lincolnville School bus data 2015. Develop a regression equation that expresses the relationship between age of the bus and maintenance cost. The age of the bus is the independent variable.

a. Draw a scatter diagram. What does this diagram suggest as to the relationship between the two variables? Is it direct or indirect? Does it appear to be strong or weak?

b. Develop a regression equation. How much does an additional year add to the maintenance cost. What is the estimated maintenance cost for a 10-year-old bus?

c.  Conduct a test of hypothesis to determine whether the slope of the regression line is greater than zero. Use the .05 significance level. Interpret your findings from parts (a), (b), and (c) in a brief report.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Refer to the Lincolnville School District bus data 2015. Conduct a test of hypothesis to reveal...
Refer to the Lincolnville School District bus data 2015. Conduct a test of hypothesis to reveal whether the mean maintenance cost is equal for each of the bus manufacturers. Use the .01 significance level. Conduct a test of hypothesis to determine whether the mean miles traveled since the last maintenance is equal for each bus manufacturer. Use the .05 significance level.
Age and the Price of Wine. For a particular red wine, the following data show the...
Age and the Price of Wine. For a particular red wine, the following data show the auction price for a 750-milliliter bottle and the age of the wine in June of 2016 (WineX website). Age (years) 36 20 29 33 41 27 30 45 34 22 Price ($) 256 142 212 255 331 173 209 297 237 182 a. Develop a scatter diagram for these data with age as the independent variable. b. What does the scatter diagram developed in...
A study of emergency service facilities investigated the relationship between the number of facilities and the...
A study of emergency service facilities investigated the relationship between the number of facilities and the average distance traveled to provide the emergency service. The following table gives the data collected. Number of Facilities Average Distance (miles) 9 1.67 11 1.12 16 0.82 21 0.63 27 0.50 30 0.47 (a) Develop a scatter diagram for these data, treating average distance traveled as the dependent variable. (b) Does a simple linear regression model appear to be appropriate? Explain. No, the scatter...
A study of emergency service facilities investigated the relationship between the number of facilities and the...
A study of emergency service facilities investigated the relationship between the number of facilities and the average distance traveled to provide the emergency service. The following table gives the data collected. Number of Facilities Average Distance (miles) 9 1.65 11 1.12 16 0.84 21 0.61 27 0.50 30 0.47 (b) Does a simple linear regression model appear to be appropriate? Explain. Yes, the scatter diagram suggests that there is a linear relationship. No, the scatter diagram suggests that there is...
A study of emergency service facilities investigated the relationship between the number of facilities and the...
A study of emergency service facilities investigated the relationship between the number of facilities and the average distance traveled to provide the emergency service. The following table gives the data collected. Number of Facilities Average Distance (miles) 9 1.65 11 1.13 16 0.83 21 0.61 27 0.51 30 0.48 (a) Develop a scatter diagram for these data, treating average distance traveled as the dependent variable (b) Does a simple linear regression model appear to be appropriate? Explain. No, the scatter...
Refer to the Lincolnville School District bus data. A. Select the variable for the number of...
Refer to the Lincolnville School District bus data. A. Select the variable for the number of miles traveled last month. Conduct a hypothesis test to determine whether the mean miles traveled last month equals 10,000. Use the .01 significance level. Find the p-value and explain what it means. B. A study of school bus fleets reports that the average per bus maintenance cost is $4,000 per year. Using the maintenance cost variable, conduct a hypothesis test to determine whether the...
Consider the following data for two variables, x and y. x 22 24 26 30 35...
Consider the following data for two variables, x and y. x 22 24 26 30 35 40 y 13 22 34 34 41 35 (a) Develop an estimated regression equation for the data of the form ŷ = b0 + b1x.  (Round b0 to one decimal place and b1 to three decimal places.) ŷ = (b) Use the results from part (a) to test for a significant relationship between x and y. Use α = 0.05 Find the value of the...
The National Football League (NFL) records a variety of performance data for individuals and teams. To...
The National Football League (NFL) records a variety of performance data for individuals and teams. To investigate the importance of passing on the percentage of games won by a team, the following data show the average number of passing yards per attempt (yds/att) and the percentage of games won (WinPct) for a random sample of 10 NFL teams for the 2011 season (NFL website, February 12, 2012). Team YDS/ATT WinPct Ariziona Cardinals 6.1 19 Atlanta Falcons 6.6 27 Carinlona Panthers...
1.   Regression analysis is to be conducted with data from vegetarians to see whether the number...
1.   Regression analysis is to be conducted with data from vegetarians to see whether the number of grams of protein each ate per day was related to diastolic blood pressure.   The resulting regression formula will be used by medical personnel to predict blood pressure in a weight loss clinic in downtown Pittsburgh. Subject Grams of protein Diastolic BP 1 4 73 2 6.5 79 3 5 83 4 5.5 82 5 8 84 6 10 92 7 9 88 8...
Regression analysis is to be conducted with data from vegetarians to see whether the number of...
Regression analysis is to be conducted with data from vegetarians to see whether the number of grams of protein each ate per day was related to diastolic blood pressure. The resulting regression formula will be used by medical personnel to predict blood pressure in a weight loss clinic in downtown Pittsburgh.   Subject Grams of protein Diastolic BP 1 4 73 2 6.5 79 3 5 83 4 5.5 82 5 8 84 6 10 92 7 9 88 8 8.2...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT