Author Question: At a highway checkpoint, the average speed of a passing car was measured at 50 miles per hour with a ... (Read 333 times)

stephzh · **on:** Jun 24, 2018

At a highway checkpoint, the average speed of a passing car was measured at 50 miles per hour with a standard deviation of 5 miles per hour.

According to Chebyshev's Theorem, what percentage of cars would you expect to be traveling between 42.5 and 57.5 miles per hour?
A) at least 50
B) at least 55.6
C) at least 75
D) at least 88.9

Question 2

The standard deviation of a discrete random variable is the positive square root of its:

A) variance.
B) mean.
C) median.
D) mode.

elizabethrperez · **Reply #1 on:** Jun 24, 2018

Answer to Question 1

B

Answer to Question 2

A

stephzh · **Reply #2 on:** Jun 24, 2018

Correct answers!

elizabethrperez · **Reply #3 on:** Jun 24, 2018

Great! Please up vote

Author Question: At a highway checkpoint, the average speed of a passing car was measured at 50 miles per hour with a ... (Read 333 times)

stephzh

At a highway checkpoint, the average speed of a passing car was measured at 50 miles per hour with a ...

Related Topics

Need homework help now?

elizabethrperez

At a highway checkpoint, the average speed of a passing car was measured at 50 miles per hour with a ...

stephzh

At a highway checkpoint, the average speed of a passing car was measured at 50 miles per hour with a ...

elizabethrperez

At a highway checkpoint, the average speed of a passing car was measured at 50 miles per hour with a ...