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 95 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
Great answer, keep it coming :)

ashely1112

  • Member
  • Posts: 347
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Although average brain size increases gradually though time in H. erectus, individuals with small br Although average brain size increases gradually though time in H. erectus, individuals with small br
Many Americans perceive bullfighting as a cruel activity that should be illegal everywhere. To most ... Many Americans perceive bullfighting as a cruel activity that should be illegal everywhere. To most ...
Concentration affects where the precipitin line forms. When 1 reactant is held at a constant ... Concentration affects where the precipitin line forms. When 1 reactant is held at a constant ...
Average Global Temperatures Average Global Temperatures
The temperature of an average lightning bolt is 3.0 x 104 °C. What is the equiva The temperature of an average lightning bolt is 3.0 x 104 °C. What is the equiva
What would your average (mean) number of cells per cluster be? What would your average (mean) number of cells per cluster be?
Video: Digestive chemicals - types & enzymes

For a complete list of videos, visit our video library