Three Different Models of Automobiles (A, B, and C) Were

question 71

Essay

Three different models of automobiles (A, B, and C) were compared for gasoline consumption. For each model of car, fifteen cars were randomly selected and subjected to standard driving procedures. The average miles/gallon obtained for each model of car and sample standard deviations are shown below. $$\begin{array}{l}&\text { Car } A & \text { Car B } & \text { Car C } \\\text { Average miles per gallon }&42 & 49 & 44 \\\text { Sample standard deviation }&4 & 5 & 3\end{array}$$ Use the above data and test to see if the mean gasoline consumption for all three models of cars is the same. Let α = .05.
​

---

Definitions:

Unemployment Rate

The percentage of the labor force that is jobless and actively seeking employment.

Positive Economics

The branch of economics that focuses on factual and cause-and-effect relationships, avoiding value judgments about what ought to be.

Prescriptions

Authorized orders for medication given by a licensed healthcare professional, allowing a patient to be provided medicine.

Factor Of Production

Resources used in the creation of goods and services, traditionally categorized into land, labor, capital, and sometimes entrepreneurship.