Author Question: Thirty-five math majors, 33 music majors and 45 history majors are randomly selected from 251 math ... (Read 89 times)

Deast7027

  • Hero Member
  • *****
  • Posts: 538
Thirty-five math majors, 33 music majors and 45 history majors are randomly selected from 251 math majors, 518 music majors and 332 history majors at the state university. What sampling technique is used?
 
  A) stratified
  B) simple random
  C) cluster
  D) convenience
  E) systematic

Question 2

The grade point averages for 10 randomly selected junior college students are listed below.
 
  Assume the grade
  point averages are normally distributed. Find a 98 confidence interval for the true mean. Round to the nearest
  hundredth.
  2.0 3.2 1.8 2.9 0.9 4.0 3.3 2.9 3.6 0.8
  A) (1.55, 3.53 ) B) (0.67, 1.81 ) C) (2.12, 3.14 ) D) (3.11, 4.35 )



ririgirl15

  • Sr. Member
  • ****
  • Posts: 385
Answer to Question 1

A

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

For a complete list of videos, visit our video library