« previous next »

Author Question: In a sample of 3,200 registered voters, 1,440, or 45, approve of the way the president is doing his ... (Read 116 times)

ec501234

  • Hero Member
  • *****
  • Posts: 573
on: Jun 24, 2018
In a sample of 3,200 registered voters, 1,440, or 45, approve of the way the president is doing his job. A political pollster states, Forty five percent of all voters approve of the president. This statement is an example of _____.
 a. a sample
  b. descriptive statistics
  c. statistical inference
  d. a population

Question 2

From a population of 500 elements, a sample of 225 elements is selected. It is known that the variance of the population is 900 . The standard error of the mean is approximately
 a. 1.1022
   b. 2
   c. 30
   d. 1.4847


jordangronback

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Jun 24, 2018
Answer to Question 1

c

Answer to Question 2

d


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Sample Workout in the Target Heart Rate Range Sample Workout in the Target Heart Rate Range
Sample Stress Management Program Sample Stress Management Program
Parenting Styles Reported by a Representative Sample of American Adolescents Parenting Styles Reported by a Representative Sample of American Adolescents
Sample Teaching Plan for Hypertension Sample Teaching Plan for Hypertension
Sample prescriptions of drugs for oral herpes infection. Sample prescriptions of drugs for oral herpes infection.
A 230.0-mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning ... A 230.0-mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning ...
Video: Humerus Adduction Animation

For a complete list of videos, visit our video library