On average,Caryl's school bus arrives on time,although sometimes it is a bit early or late.If the arrival times are distributed on a normal curve,which of the following statistics would enable Caryl to estimate the probability that her bus will arrive within 5 minutes of its scheduled arrival time on any given day?
A) median
B) mean
C) standard deviation
D) mode

Question

Quizplus · Accepted Answer

The standard deviation in a normal distribution measures the dispersion or variability around the mean, allowing for the estimation of the probability of occurrences within a certain range from the mean, such as arriving within 5 minutes of the scheduled time.

On Average,Caryl's School Bus Arrives on Time,although Sometimes It Is