Author Question: In a sample of 1901 patients who underwent a certain type of surgery, 22 experienced complications. ... (Read 37 times)

sam.t96

  • Hero Member
  • *****
  • Posts: 570
In a sample of 1901 patients who underwent a certain type of surgery, 22 experienced complications. Find a 90 confidence interval for the proportion of all those undergoing this surgery who experience complications.
 
  A) 0.2105 to 0.2295 B) 0.2044 to 0.2356 C) 0.2011 to 0.2389 D) 0.2078 to 0.2322

Question 2

A percentage distribution is given below for the size of families in one U.S. city.
 
  Size Percentage
  2 43.5
  3 23.5
  4 19.6
  5 8.5
  6 3.2
  7+ 1.7
 
  A family is selected at random. Find the probability that the size of the family is 4 or more.
 
  Round results to three decimal places.
  A) 0.330 B) 0.134 C) 0.866 D) 0.196



LP

  • Sr. Member
  • ****
  • Posts: 302
Answer to Question 1

B

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

For a complete list of videos, visit our video library