« previous next »

Author Question: A company has developed a new computer sound card whose average lifetime is unknown. In order to ... (Read 115 times)

ec501234

  • Hero Member
  • *****
  • Posts: 573
on: Jun 24, 2018
A company has developed a new computer sound card whose average lifetime is unknown. In order to estimate this average, 200 sound cards are randomly selected from a large production line and tested; their average lifetime is found to be 5 years. The 200 sound cards represent a:
 A. parameter.
  B. statistic.
  C. sample.
  D. population.

Question 2

You take a random sample of 100 students at your university and find that their average GPA is 3.1 . If you use this information to help you estimate the average GPA for all students at your university, then you are doing what branch of statistics?
 A. Descriptive statistics b. Inferential statisticsc. Sample statisticsd. Population statistics


ergserg

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jun 24, 2018
Answer to Question 1

Analysis:
A. Incorrect This represents a sample.
B. Incorrect This represents a sample.
C. Correct. This represents a sample.
D. Incorrect This represents a sample.
ANSWER : C

Answer to Question 2

Analysis:
A. Incorrect. This is Inferential Statistics.
B. Correct. This is Inferential Statistics.
C. Incorrect. This is Inferential Statistics.
D. Incorrect This is Inferential Statistics.
ANSWER : B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

ec501234

  • Hero Member
  • *****
  • Posts: 573
Reply #2 on: Jun 24, 2018
Correct answers!


ergserg

  • Sr. Member
  • ****
  • Posts: 338
Reply #3 on: Jun 24, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

When Union troops pushed toward Richmond in June of 1862, these slaves crossed the Rappahannock Rive When Union troops pushed toward Richmond in June of 1862, these slaves crossed the Rappahannock Rive
Morris and Company, Sussex Rush-Seated Chairs. Morris and Company, Sussex Rush-Seated Chairs.
The firing order is cast or stamped on the intake manifold on most engines that have a distributor ... The firing order is cast or stamped on the intake manifold on most engines that have a distributor ...
The relation between the physical and perceptual dimensions of sound. The relation between the physical and perceptual dimensions of sound.
The per capita emissions of the developed world The per capita emissions of the developed world
Computer reconstructions of the diversity in neurons that exist across species Computer reconstructions of the diversity in neurons that exist across species
Video: Double Stranded DNA Molecule Animation

For a complete list of videos, visit our video library