« previous next »

Author Question: The following contingency table shows the number of two-bedroom apartments grouped by monthly rent ... (Read 113 times)

mpobi80

  • Hero Member
  • *****
  • Posts: 519
on: Jun 24, 2018
The following contingency table shows the number of two-bedroom apartments grouped by monthly rent and location.
 
  Monthly Rent York Lancaster Dover
  600 to under 700 6 14 7
  700 to under 800 23 17 20
  800 to under 900 10 16 12
 
  The probability that a randomly selected apartment from this group was located in York or Lancaster is ________.
  A) 0.350
  B) 0.435
  C) 0.688
  D) 0.712

Question 2

The time for a professor to grade an exam is normally distributed with a mean of 16.3 minutes and a standard deviation of 4.2 minutes. The interval around the mean that contains 68 of the times needed to grade exams is ________.
 
  A) 12.1, 20.5
  B) 7.9, 24.7
  C) 5.8, 26.8
  D) 3.7, 28.9


emily12345

  • Sr. Member
  • ****
  • Posts: 321
Reply #1 on: Jun 24, 2018
Answer to Question 1

C

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

mpobi80

  • Hero Member
  • *****
  • Posts: 519
Reply #2 on: Jun 24, 2018
Correct answers!


emily12345

  • Sr. Member
  • ****
  • Posts: 321
Reply #3 on: Jun 24, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

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

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Did you know?

Everyone has one nostril that is larger than the other.

Avogadro's number calculation Avogadro's number calculation
The end of a typical line wrench, which shows that it is capable of grasping most of the head of ... The end of a typical line wrench, which shows that it is capable of grasping most of the head of ...
This label on a Toyota Camry hybrid shows the relative smog-producing emissions, but this does not ... This label on a Toyota Camry hybrid shows the relative smog-producing emissions, but this does not ...
How to write any number in scientific notation How to write any number in scientific notation
Atomic Number and Mass Number Atomic Number and Mass Number
DNA Hypermethylation of Number of Known Genes DNA Hypermethylation of Number of Known Genes
Video: Primate Evolutionary Tree Animation

For a complete list of videos, visit our video library