This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: At a highway checkpoint, the average speed of a passing car was measured at 50 miles per hour with a ... (Read 359 times)

stephzh

  • Hero Member
  • *****
  • Posts: 556
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.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

elizabethrperez

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jun 24, 2018
Answer to Question 1

B

Answer to Question 2

A


stephzh

  • Hero Member
  • *****
  • Posts: 556
Reply #2 on: Jun 24, 2018
Correct answers!


elizabethrperez

  • Sr. Member
  • ****
  • Posts: 344
Reply #3 on: Jun 24, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Killer Whale - Size comparison to an average human. Killer Whale - Size comparison to an average human.
Skin signs are objective evidence of an illness or disorder. They can be seen, measured, or felt. Skin signs are objective evidence of an illness or disorder. They can be seen, measured, or felt.
Change in Emotional States During Adolescence Average emotional state becomes teadilyi more negativ Change in Emotional States During Adolescence Average emotional state becomes teadilyi more negativ
Examples of Impacts Associated with Different Amounts of Global Average Temperat Examples of Impacts Associated with Different Amounts of Global Average Temperat
All fuel injectors should make the same sound with the engine running at idle speed. A lack of sound ... All fuel injectors should make the same sound with the engine running at idle speed. A lack of sound ...
Projectile Passing Through Tissue Projectile Passing Through Tissue
Video: Exercise and cardiac output & Definition of stroke volume

For a complete list of videos, visit our video library