The Grade of a Highway Up a Hill Is 70

question 21

Multiple Choice

The grade of a highway up a hill is 70%. How much change in horizontal distance is there if the vertical height of the hill is 200 feet? Express the answer to the nearest foot.

• A) 305 ft
• B) 286 ft
• C) 186 ft
• D) 296 ft
• E) 261 ft

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Definitions:

T-Distribution

A probability distribution that arises in the sampling distribution of sample means, especially useful when the sample size is small and the population variance is unknown.

Population Mean

The average value of all members of a defined set of people, objects, events, or values of interest.

T Distribution Table

A table used in statistics that shows the critical values of the t-distribution, aiding in hypothesis testing and confidence interval estimation.

Degrees Of Freedom

A concept in statistical analysis that represents the number of values in a calculation that are free to vary without violating any given constraints.