A Major US

question 36

Multiple Choice

A major U.S. automaker has determined that the city mileage for one of its new SUV models is normally distributed with a mean equal to 15.2 mpg. A report issued by the company indicated that 22 percent of the SUV model vehicles will get more than 17 mpg in the city. Given this information, what is the city mileage standard deviation for this SUV model?

• A) 0.77 mpg
• B) Approximately 2.34 mpg
• C) 1.8 mpg
• D) Approximately 3.1 mpg

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Definitions:

Cover Pictures

Images or graphics used on the front page of documents, websites, or social media profiles to represent content or convey specific messages.

Chi-square Statistic

A statistical measure used to determine the difference between observed and expected frequencies in categorical datasets.

P-value

The probability of observing test results at least as extreme as the results actually observed, under the assumption that the null hypothesis is correct.

Null Hypothesis

A statement used in statistical analysis that proposes there is no significant difference or effect, serving as the default assumption to be tested against an alternative hypothesis.