Question

In the context of the local police department's study, what is the confidence interval estimate for how far over the posted speed limit the average speeder is going?

A) 4.5 to 5.9 mph
B) 3.5 to 6.9 mph
C) 4.2 to 5.9 mph
D) 3.8 to 6.6 mph

Answer 1

Without specific data, we cannot calculate the confidence interval for the average speed overage of a speeder. The confidence interval would typically include a lower and upper limit representing where the true population mean is likely to fall with a certain level of confidence.

Step-by-step explanation:

To estimate the confidence interval for how far over the posted speed limit the average speeder is going, we need additional information such as the mean of the observed speeds, the standard deviation, and the sample size. Without this information, we cannot calculate the confidence interval. However, based on the choices provided, it appears the question is asking which of the given options represents the confidence interval for the average speed overage. A typical confidence interval is in the form of (mean - margin of error, mean + margin of error). So, if the confidence level is 95 percent, we would say with 95 percent confidence that the true value of the population mean is between the lower and upper bounds of this interval.