Author Question: What is the probability that X is farther than one standard deviation from the mean? What will be ... (Read 50 times)

rl

  • Hero Member
  • *****
  • Posts: 579
What is the probability that X is farther than one standard deviation from the mean?
 
  What will be an ideal response?

Question 2

In the sign test applications, the normal approximation to the binomial distribution may be used whenever the number of nonzero differences exceeds:
 
  A) 5
  B) 10
  C) 20
  D) 15



kalskdjl1212

  • Sr. Member
  • ****
  • Posts: 353
Answer to Question 1

   = 1  6.333 , or -5.633 to 7.633, so X would have to take on the values -5, 0, or 5 to be in this interval, and the probability of this occurring is 0.3 + 0.1 + 0.3 = 0.7. The probability that X is outside this interval is 1 - 0.7 = 0.3

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

For a complete list of videos, visit our video library