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

Author Question: Whenever a statistical population can be described, at least roughly, by the perfectly symmetrical, ... (Read 125 times)

bobthebuilder

  • Hero Member
  • *****
  • Posts: 567
on: Jul 24, 2018
Whenever a statistical population can be described, at least roughly, by the perfectly symmetrical, bell-shaped normal curve, we can estimate the percentages of all population values that lie within specified numbers of standard deviations from the mean with the help of:
 a. Tchebysheff's Theorem
  b. the empirical rule
  c. the interquartile range
  d. box plot
  e. none of these

Question 2

A political analyst in Michigan surveys a random sample of registered Democrats and compares the results with those obtained from a random sample of registered Republicans. This would be an example of:
 a. dependent samples.
  b. independent samples.
  c. independent samples only if the sample sizes are equal.
  d. dependent samples only if the sample sizes are equal.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

perkiness

  • Sr. Member
  • ****
  • Posts: 348
Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

B


bobthebuilder

  • Hero Member
  • *****
  • Posts: 567
Reply #2 on: Jul 24, 2018
Thank you!


perkiness

  • Sr. Member
  • ****
  • Posts: 348
Reply #3 on: Jul 24, 2018
Always glad to help...


« previous next »
 

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?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

The three basic body plans of bilaterally symmetrical animals. The three basic body plans of bilaterally symmetrical animals.
Interaction web of factors that might influence locust population size. Interaction web of factors that might influence locust population size.
Sources of income for U.S. population aged 65 and over. Sources of income for U.S. population aged 65 and over.
Population Distribution Population Distribution
Population Indicators Population Indicators
Typical bacterial population growth curve showing the initial lag phase Typical bacterial population growth curve showing the initial lag phase
Video: What is an ecosystem?

For a complete list of videos, visit our video library