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 58 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
Wow, this really help

amcvicar

  • Member
  • Posts: 341
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

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?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Average winter rainfall and variation in rainfall among sites inhabited by Suromalus ater Average winter rainfall and variation in rainfall among sites inhabited by Suromalus ater
Average optimal blood pressure for age Average optimal blood pressure for age
Marriages Between Whites and African Americans: The Race-Ethnicity of the Husbands and Wives Marriages Between Whites and African Americans: The Race-Ethnicity of the Husbands and Wives
Most Americans obtain their drinking water from a community water system Most Americans obtain their drinking water from a community water system
Average Years of Schooling versus GDP per Capita Average Years of Schooling versus GDP per Capita
Average Number of Days per Year with Thunderstorms Average Number of Days per Year with Thunderstorms
Video: Parathyroid hormone (bone resorption) & Calcitonin (bone deposition)

For a complete list of videos, visit our video library