A Consumer Research Organization Is Attempting to Determine Whether There

question 9

Essay

A consumer research organization is attempting to determine whether there is any difference in mpg for fully loaded 22-foot trucks leased from three companies,A-Haul,Bertz,and Glyder.Five of these trucks are rented from each company.Each truck is driven with the same weight cargo over the same 200 mile route and the mpg recorded.The results of the test are: $$\begin{array} { | c | c | c | } \hline \text { A-Haul } & \text { Bertz } & \text { Glyder } \\\hline 3.4 & 5.1 & 7.9 \\4.2 & 2.0 & 8.5 \\5.1 & 8.7 & 5.2 \\4.9 & 6.7 & 8.0 \\3.1 & 6.1 & 8.1 \\\hline\end{array}$$ Perform the hypothesis test: H₀: $\mu _ { 1 } = \mu _ { 2 } = \mu _ { 3 }$ (Average mpg is the same for all three rental companies)
H₁: Not all of the mean mpg is the same for the three companies An $\alpha$ = 0.05 is used by the consumer research organization.Is there any difference in mean mpg?
Test statistic = ____________________ = ____________________
Conclusion: ____________________
Interpretation:________________________________________________________

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Definitions:

Stereotype Interchangeability

The principle that negative stereotypes are often interchangeable from one racial group (or gender or social class) to another.

Status

The relative social, professional, or other standing of someone or something within a society or group.

Latino/Latina

Persons of Latin American origin or descent, used as a gender-specific term reflecting cultural heritage and identity.

Single Ethnicity

Pertains to individuals or groups that identify with or belong to only one specific ethnic background, culture, or heritage.