Author Question: A sample of 60 students from a large university was taken. The average age in the sample was 22 ... (Read 105 times)

cagreen833

  • Hero Member
  • *****
  • Posts: 544
A sample of 60 students from a large university was taken. The average age in the sample was 22 years with a standard deviation of 6 years. Construct a 95 confidence interval for the average age of the population.

Question 2

A control chart that is used to monitor the variation of the measurements in a sample is
 a. a p chart.
 b. an X chart.
 c. an R chart.
 d. an np chart.



cam1229

  • Sr. Member
  • ****
  • Posts: 329
Answer to Question 1

20.45 to 23.55 years

Answer to Question 2

c



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

For a complete list of videos, visit our video library