Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Please explain your workings, thank you for your time and good luck. Question 2 - Utility Bills Supposed that, when comparing utility bills, a researcher

Please explain your workings, thank you for your time and good luck.

image text in transcribed
Question 2 - Utility Bills Supposed that, when comparing utility bills, a researcher was interested in determining whether residential utility bills differed among different cities in Canada, and also whether they differed depending on the number of bedrooms in a house. As part of the study, a random sample of households in different Canadian cities was selected, and their monthly utility bills and number of bedrooms were recorded. The data is provided in the dataset Utility Bills. a) Plot the residuals against the fitted values corresponding to the two-way ANOVA model for this analysis. What two key model assumptions can be examined with this plot and do they appear to be warranted? b) Test the following hypothesis at the 1% significance level; make sure you follow all the steps for hypothesis testing indicated in the Instructions section. Use software to generate the corresponding two-way ANOVA table, but show any other computations. . Significant interaction effect between number of bedrooms and city; Significant main effect of the number of bedrooms factor (if warranted); Significant main effect of the city factor (if warranted). c) Create the corresponding interaction plot and explain if it shows interaction between number of bedrooms and city. Is this consistent with your results for part b) above? d) Calculate the Bonferroni margin of error for the confidence intervals based on all pairwise differences between the treatment means. Show your manual calculations and use an overall 95% confidence level. e) Using the calculated margin of error from part d) and the pairwise confidence interval approach, determine whether there is sufficient evidence (at the 5% significance level) of a difference in mean monthly utility bills between 2-bedroom houses in Ottawa and 2- bedroom houses in London

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

College Algebra

Authors: Mark Dugopolski

5th Edition

0321899822, 9780321899828

More Books

Students also viewed these Mathematics questions

Question

CL I P COL Astro- L(1-cas0) Lsing *A=2 L sin(0/2)

Answered: 1 week ago

Question

Pay him, do not wait until I sign

Answered: 1 week ago

Question

Speak clearly and distinctly with moderate energy

Answered: 1 week ago