This topic contains a solution. Click here to go to the answer

Author Question: If a researcher wishes to increase the confidence level from 95 to 99, what approximately will be ... (Read 56 times)

segrsyd

  • Hero Member
  • *****
  • Posts: 530
If a researcher wishes to increase the confidence level from 95 to 99, what approximately will be the effect on sample size?
 a. The sample size will decrease in proportion to the increase in the confidence level.
  b. The ratio of the new sample size to the old is 3/2.
  c. The ratio of the new sample size to the old is 2/3.
  d. The ratio of the new sample size to the old is 9/4.
  e. The ratio of the new sample size to the old is 4/9.

Question 2

If the desired level of confidence to estimate a mean is increased from 90 (with z = 1.60) to 95, the sample size is increased by a factor of __________, all else equal.
 a. 2.50
  b. 4.65
  c. Has no effect on sample size.
  d. 1.56
  e. 2.00



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kjohnson

  • Sr. Member
  • ****
  • Posts: 330
Answer to Question 1

D

Answer to Question 2

D




segrsyd

  • Member
  • Posts: 530
Reply 2 on: Jun 29, 2018
:D TYSM


Dinolord

  • Member
  • Posts: 313
Reply 3 on: Yesterday
Excellent

 

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

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?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

For a complete list of videos, visit our video library