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

Author Question: In estimating the standard deviation in the population for the formula for calculating the sample ... (Read 143 times)

Sufayan.ah

  • Hero Member
  • *****
  • Posts: 512
on: Jun 29, 2018
In estimating the standard deviation in the population for the formula for calculating the sample size for estimating a mean, we can use some prior knowledge about the
 a. sample to estimate our standard deviation.
  b. population, undertake a pilot study or estimate the range, and divide by 10.
  c. population, undertake a pilot study or estimate the range, and divide by 6.
  d. Either of the two; b or c would work.
  e. None of the above; if you do not have the actual standard deviation, you cannot use the formula.

Question 2

Which of the following statements is most accurate regarding the relationship between sample size and the sample representativeness?
 a. There is no relation between the size of a sample and the representativeness of the population from which it is drawn.
  b. There is a strong positive relationship between the size of a sample and the representativeness of the population from which it is drawn.
  c. You cannot have a representative sample unless the sample size is equal to or exceeds ten percent of the population.
  d. Sample size determines representativeness but only if the sample plan is a probability sampling plan.
  e. None of the above.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

shoemake

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jun 29, 2018
Answer to Question 1

C

Answer to Question 2

a


Sufayan.ah

  • Member
  • Posts: 512
Reply 2 on: Jun 29, 2018
Gracias!

jordangronback

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

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.

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

The bobcat population has seen declines in the American Midwest, but is generally stable and healthy The bobcat population has seen declines in the American Midwest, but is generally stable and healthy
Standard Schnauzer Standard Schnauzer
GUIDELINES FOR ASSESSING MEMBERS OF VULNERABLE POPULATION GROUPS GUIDELINES FOR ASSESSING MEMBERS OF VULNERABLE POPULATION GROUPS
Working-Age Fraction of the U.S. Population, 1950–2050 Working-Age Fraction of the U.S. Population, 1950–2050
(left) Urine sample from an unaffected person does not change color upon exposure to air. (right) Ur (left) Urine sample from an unaffected person does not change color upon exposure to air. (right) Ur
Video: Aneurysm

For a complete list of videos, visit our video library