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

Author Question: If numerous large random samples or repetitions of the same size are taken from a population, the ... (Read 113 times)

silviawilliams41

  • Hero Member
  • *****
  • Posts: 560
on: Jul 24, 2018
If numerous large random samples or repetitions of the same size are taken from a population, the frequency curve made from means from the various samples will have what approximate shape?
 a. A flat shape; each outcome should be equally likely.
  b. A bell-shape.
  c. A histogram.
  d. Unknown; it can change every time.

Question 2

In which of the following situations does the rule for sample means not apply?
 a. A pollster takes a random sample of 1,000 Americans and asks them to give their opinion of the President on a scale from 1 (completely disapprove) to 100 (completely approve). He is interested in the average rating.
  b. You take a random sample of 20 students' scores from the ACT exam and record the average score. Assume ACT scores are bell-shaped.
  c. A sports fan takes a random sample of 20 NBA players and records their salaries. He wants to estimate the average salary for the entire NBA.
  d. The rule for sample means does not apply in any of these situations.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

duke02

  • Sr. Member
  • ****
  • Posts: 312
Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

C


silviawilliams41

  • Hero Member
  • *****
  • Posts: 560
Reply #2 on: Jul 24, 2018
Both answers were spot on, thank you once again


duke02

  • Sr. Member
  • ****
  • Posts: 312
Reply #3 on: Jul 24, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

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?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Interaction web of factors that might influence locust population size. Interaction web of factors that might influence locust population size.
Large Wolf Spider with young in Michigan Large Wolf Spider with young in Michigan
Bell Curve for Intelligence IQ scores for a population-based sample usually fall into this kind of Bell Curve for Intelligence IQ scores for a population-based sample usually fall into this kind of
Europe’s Size and Location Europe’s Size and Location
Products like Beano contain enzymes that help reduce the production of gas in the large intestine Products like Beano contain enzymes that help reduce the production of gas in the large intestine
As shown in the figure, a large open tank contains a layer of oil ( density 450 kg/m3) floating ... As shown in the figure, a large open tank contains a layer of oil ( density 450 kg/m3) floating ...
Video: Primate Evolutionary Tree Animation

For a complete list of videos, visit our video library