Question

question 10 of 10
you test 8 automobiles of the same make and model and find their mileage ratings to be 25, 25, 26, 27, 30, 31, 32, and 1,000,000 mpg, arranged in order from smallest to largest. if you use inferential statistics (and reject the outlier) to predict what mileage consumers can expect when they buy this type of car, what value would you predict?
a. 30 mpg
b. 28 mpg
c. 24.5 mpg
d. 67 mpg
e. 125,024.5 mpg

Explanation:

Step1: Identify the outlier

The value 1,000,000 is an outlier as it is extremely different from the other values.

Step2: Calculate the mean of non - outlier values

The non - outlier values are 25, 25, 26, 27, 30, 31, 32. The sum of these values is $25 + 25+26 + 27+30+31+32=196$. There are 7 non - outlier values. The mean is $\frac{196}{7}=28$.

Answer:

B. 28 mpg