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

Author Question: According to R.L. Polk & Co, Americans held onto their new vehicles for an average of 71.4 ... (Read 88 times)

vicotolentino

  • Hero Member
  • *****
  • Posts: 552
on: Jun 24, 2018
According to R.L. Polk & Co, Americans held onto their new vehicles for an average of 71.4 months.
 
  A random sample of 60 adults who recently sold their new vehicle was selected. Assuming the standard deviation for this population is 15.8 months, the standard error for this sample is ________.
  A) 1.30
  B) 2.04
  C) 3.56
  D) 5.92

Question 2

YouTube would like to test the hypothesis that the standard deviation for the length of an online video watched by a user is more than 2 minutes. A random sample of 21 people who watched online videos was selected.
 
  The sample standard deviation for the length of the video was found to be 2.5 minutes. Using  = 0.10, the critical value for this hypothesis test would be ________.A) 12.443
  B) 28.412
  C) 29.615
  D) 30.813


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Christopher

  • Sr. Member
  • ****
  • Posts: 316
Reply #1 on: Jun 24, 2018
Answer to Question 1

B

Answer to Question 2

B


vicotolentino

  • Member
  • Posts: 552
Reply 2 on: Jun 24, 2018
Thanks for the timely response, appreciate it

nyrave

  • Member
  • Posts: 344
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

This engraving by William Russell Birch shows Congress Hall (left), which was occupied by Congress f This engraving by William Russell Birch shows Congress Hall (left), which was occupied by Congress f
Many African Americans are trying to get in closer contact with their roots. To do this, some use ... Many African Americans are trying to get in closer contact with their roots. To do this, some use ...
Some vehicles use a surge tank, which is located at the highest level of the cooling system, with ... Some vehicles use a surge tank, which is located at the highest level of the cooling system, with ...
A symbol showing an engine with an arrow pointing down is used on some General Motors vehicles to ... A symbol showing an engine with an arrow pointing down is used on some General Motors vehicles to ...
A leak detection pump (LDP) used on some Chrysler vehicles to pressurize (slightly) the fuel ... A leak detection pump (LDP) used on some Chrysler vehicles to pressurize (slightly) the fuel ...
Average Years of Schooling versus GDP per Capita Average Years of Schooling versus GDP per Capita
Video: Bone Healing Animation

For a complete list of videos, visit our video library