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

Author Question: Suppose that in a large population, the proportion that is left-handed is p = 0.10 . Suppose n = 20 ... (Read 111 times)

Diane

  • Hero Member
  • *****
  • Posts: 576
on: Jul 24, 2018
Suppose that in a large population, the proportion that is left-handed is p = 0.10 . Suppose n = 20 people will be randomly selected and X = number of people in the sample who are left-handed. What probability model should be used to find the probability that X = 3?
 a. Binomial
  b. Normal
  c. Uniform
  d. Chi-square

Question 2

A random sample of 40 men drank an average of 20 cups of coffee per week during finals, while a sample of 30 women drank an average of 15 cups of coffee per week. The sample standard deviations were 6 cups for the men and 3 cups for the women. The standard error for the difference between the two sample means is
 a. 1.095
  b. 1.200
  c. 1.549
  d. 2.400


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

vickybb89

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jul 24, 2018
Answer to Question 1

A

Answer to Question 2

A


Diane

  • Hero Member
  • *****
  • Posts: 576
Reply #2 on: Jul 24, 2018
Both answers were spot on, thank you once again


vickybb89

  • Sr. Member
  • ****
  • Posts: 347
Reply #3 on: Jul 24, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Details of plant population biology from repeat photography: (a) saguaro cactus in MacDougal Crater, Details of plant population biology from repeat photography: (a) saguaro cactus in MacDougal Crater,
Large-scale impacts of the (a) positive, and (b) negative phases of the North Atlantic Oscillation. Large-scale impacts of the (a) positive, and (b) negative phases of the North Atlantic Oscillation.
The large orb web of Araneus diadematus (European garden spider). The large orb web of Araneus diadematus (European garden spider).
In 1879 an army officer founded the Carlisle School in Pennsylvania to “civilize” young Indians. The In 1879 an army officer founded the Carlisle School in Pennsylvania to “civilize” young Indians. The
(a) The phagocytic process, beginning in the upper left with bacterial attachment and phagocytic ... (a) The phagocytic process, beginning in the upper left with bacterial attachment and phagocytic ...
Population growth Population growth
Video: The Hypothalamus: The Body's Thermostat (Human Thermostat)

For a complete list of videos, visit our video library