Question

In estimating the mean speed of a roadway segment,a pilot sample of 100 vehicles at this location yield a sample standard deviation of 4.8 miles/ hr

Answer 1

Answer:

See Explanation

Explanation:

Given

$n = 100$

$\sigma= 4.8$

Required

The question is incomplete.

Given the sample size and the standard deviation, a likely question could be to calculate the standard error (SE) of the mean

This is calculated as:

$SE = \frac{\sigma}{\sqrt n}$

Substitute values

$SE = \frac{4.8}{\sqrt{100}}$

Take the positive square root of 100

$SE = \frac{4.8}{10}$

$SE = 0.48$