« 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 87 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?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

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

A sample prescription written by a physician. A sample prescription written by a physician.
Urinometer. In this procedure, a urine sample and urinometer are placed within a tube, and the liqui Urinometer. In this procedure, a urine sample and urinometer are placed within a tube, and the liqui
In 2008, Barack Obama was elected president of the United States, the first minority to achieve this ... In 2008, Barack Obama was elected president of the United States, the first minority to achieve this ...
Sample root cause analysis: Duplicate dose of a narcotic analgesic. Sample root cause analysis: Duplicate dose of a narcotic analgesic.
Sample Inclusion for Various s Sample Inclusion for Various s
What is the estimated age of the archaeological sample What is the estimated age of the archaeological sample
Video: DNA close up Animation

For a complete list of videos, visit our video library