Your Company Is Testing a New Auto Engine in a Race

question 46

Multiple Choice

Your company is testing a new auto engine in a race car.The race car is on a 2-mile track.If the first lap was exactly at 2 minutes, so that the average speed for the first lap was 1.00 mile per minute, what would be the time required for the second lap so that the overall average speed will be 4 miles per minute?

• A)It's not possible to end up with an overall average speed of 4 miles per minute.
• B)1.0 minute
• C)0.8 minutes
• D)0.6 minutes
• E)0.4 minutes

---

Definitions:

Randomized Design

An experimental design in which subjects are randomly allocated to different groups to ensure that each has an equal chance of receiving any of the treatments.

Population Variances

The variances of different populations, measuring the dispersion of a set of values relative to their mean.

Equal-Variances T-Test

A statistical test comparing the means of two independent samples, based on the assumption that both groups have similar variances.

F-Test

A statistical test used to compare the variances of two populations to see if they are significantly different.