Author Question: A recent survey found that 72 of all adults over 50 own cell phones. You randomly select 36 adults ... (Read 158 times)

notis

  • Hero Member
  • *****
  • Posts: 596
A recent survey found that 72 of all adults over 50 own cell phones. You randomly select 36 adults over 50, and ask if he or she owns a cell phone. Decide whether you can use the normal distribution to approximate the binomial distribution.
 
  If so, find the mean and standard deviation, If not, explain why. Round to the nearest hundredth when necessary.

Question 2

Determine whether the following statement regarding a hypothesis test for two population proportions is true or false:
 
  However small the difference between two population proportions, for sufficiently large sample sizes, the null hypothesis of
 
  equal population proportions is likely to be rejected.
  A) True B) False



meow1234

  • Sr. Member
  • ****
  • Posts: 333
Answer to Question 1

use normal distribution,  = 25.92 and  = 2.69.

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

For a complete list of videos, visit our video library