Homework Help is Here – Start Your Trial Now!
Math
Statistics
Fuel Economy, Minivans ~ The Environmental Protection Agency (EPA) publishes fuel economy values that are known to be good estimates of the fuel economy a typical driver will achieve under average driving conditions. One of the fuel economy values the EPA publishes is a combined estimate, which represents a combination of city driving (55%) and highway driving (45%). Toyota Sienna, a popular minivan, advertises an average combined fuel usage of 22 mpg. A large rental company collected the information about combined fuel economy (mpg) for their 10 Toyota Sienna minivans. The results are shown in the table below. 21.7 21 21.9 20.4 21.8 21.6 22.5 20.8 23.5 21.1 The company calculates the sample mean to be 21.63 and sample standard deviation as 0.897. Round all calculated values to 4 decimal places as appropriate. 1. The management believes that Toyota has overestimated the fuel economy of the Sienna. Which set of hypotheses should we use to determine if the fuel efficiency of the Sienna is less than what is advertised? ОА. Но : и %3D22 vs. Ha : и # 22 ов. Но : и %3D 22 vs. Ha : и < 22 ос. Но : и %3D 22 vs. Ha : и > 22 OD. Họ : µ < 21.63 vs. Ha : u > 21.63 2. What conditions must be met if we want to perform a hypothesis test and answer the question of the management? Select all that apply: OA. np 2 10 and n(1 – p) > 10 VB. The observations are independent. C. Population data must be nearly normal or the sample size must be at least 30. MD. There must be at least 3 levels of the categorical variable.

Fuel Economy, Minivans ~ The Environmental Protection Agency (EPA) publishes fuel economy values that are known to be good estimates of the fuel economy a typical driver will achieve under average driving conditions. One of the fuel economy values the EPA publishes is a combined estimate, which represents a combination of city driving (55%) and highway driving (45%). Toyota Sienna, a popular minivan, advertises an average combined fuel usage of 22 mpg. A large rental company collected the information about combined fuel economy (mpg) for their 10 Toyota Sienna minivans. The results are shown in the table below. 21.7 21 21.9 20.4 21.8 21.6 22.5 20.8 23.5 21.1 The company calculates the sample mean to be 21.63 and sample standard deviation as 0.897. Round all calculated values to 4 decimal places as appropriate. 1. The management believes that Toyota has overestimated the fuel economy of the Sienna. Which set of hypotheses should we use to determine if the fuel efficiency of the Sienna is less than what is advertised? ОА. Но : и %3D22 vs. Ha : и # 22 ов. Но : и %3D 22 vs. Ha : и < 22 ос. Но : и %3D 22 vs. Ha : и > 22 OD. Họ : µ < 21.63 vs. Ha : u > 21.63 2. What conditions must be met if we want to perform a hypothesis test and answer the question of the management? Select all that apply: OA. np 2 10 and n(1 – p) > 10 VB. The observations are independent. C. Population data must be nearly normal or the sample size must be at least 30. MD. There must be at least 3 levels of the categorical variable.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Topic Video
Question

I need help with question 2 

Fuel Economy, Minivans economy a typical driver will achieve under average driving conditions. One of the fuel economy values the EPA publishes is a combined estimate, which represents a combination of city driving (55%) and highway driving (45%). The Environmental Protection Agency (EPA) publishes fuel economy values that are known to be good estimates of the fuel Toyota Sienna, a popular minivan, advertises an average combined fuel usage of 22 mpg. A large rental company collected the information about combined fuel economy (mpg) for their 10 Toyota Sienna minivans. The results are shown in the table below. 21.7 21 21.9 20.4 21.8 21.6 22.5 20.8 23.5 21.1 The company calculates the sample mean to be 21.63 and sample standard deviation as 0.897. Round all calculated values to 4 decimal places as appropriate. 1. The management believes that Toyota has overestimated the fuel economy of the Sienna. Which set of hypotheses should we use to determine if the fuel efficiency of the Sienna is less than what is advertised? ОА. Но : и — 22 vs. Ha : и + 22 В. Но : и 22 vs. Ha : и < 22 Ос. Но : и OD. Ho : µ < 21.63 vs. Ha :µ > 21.63 22 vs. Ha : pи> 22 2. What conditions must be met if we want to perform a hypothesis test and answer the question of the management? Select all that apply: A. np > 10 and n(1 – p) > 10 VB. The observations are independent. C. Population data must be nearly normal or the sample size must be at least 30. |D. There must be at least 3 levels of the categorical variable.
Transcribed Image Text:Fuel Economy, Minivans economy a typical driver will achieve under average driving conditions. One of the fuel economy values the EPA publishes is a combined estimate, which represents a combination of city driving (55%) and highway driving (45%). The Environmental Protection Agency (EPA) publishes fuel economy values that are known to be good estimates of the fuel Toyota Sienna, a popular minivan, advertises an average combined fuel usage of 22 mpg. A large rental company collected the information about combined fuel economy (mpg) for their 10 Toyota Sienna minivans. The results are shown in the table below. 21.7 21 21.9 20.4 21.8 21.6 22.5 20.8 23.5 21.1 The company calculates the sample mean to be 21.63 and sample standard deviation as 0.897. Round all calculated values to 4 decimal places as appropriate. 1. The management believes that Toyota has overestimated the fuel economy of the Sienna. Which set of hypotheses should we use to determine if the fuel efficiency of the Sienna is less than what is advertised? ОА. Но : и — 22 vs. Ha : и + 22 В. Но : и 22 vs. Ha : и < 22 Ос. Но : и OD. Ho : µ < 21.63 vs. Ha :µ > 21.63 22 vs. Ha : pи> 22 2. What conditions must be met if we want to perform a hypothesis test and answer the question of the management? Select all that apply: A. np > 10 and n(1 – p) > 10 VB. The observations are independent. C. Population data must be nearly normal or the sample size must be at least 30. |D. There must be at least 3 levels of the categorical variable.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Research Design Formulation
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS