« previous next »

Author Question: A random sample of 100 credit sales in a department store showed an average sale of 120.00 . From ... (Read 102 times)

strangeaffliction

  • Hero Member
  • *****
  • Posts: 660
on: Jun 24, 2018
A random sample of 100 credit sales in a department store showed an average sale of 120.00 . From past data, it is known that the standard deviation of the population is 40.00.
 a. Determine the standard error of the mean.
  b. With a .95 probability, determine the margin of error.
  c. What is the 95 confidence interval of the population mean?

Question 2

George Dantzig is important in the history of management science because he developed
 a. the scientific management revolution.
  b. World War II operations research teams.
  c. the simplex method for linear programming.
  d. powerful digital computers.


TheDev123

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. 4.00
b. 7.84
c. 112.16 to 127.84

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Nurse examining and measuring hematuria sample from client with a UTI Nurse examining and measuring hematuria sample from client with a UTI
Sample Advance Directive Cont. Sample Advance Directive Cont.
Sample prescriptions of antibiotics for prophylaxis against infective endocarditis. Sample prescriptions of antibiotics for prophylaxis against infective endocarditis.
Average Surface Air Pressure – July Average Surface Air Pressure – July
) Random assortment of maternal (blue) and paternal (purple) chromosomes at metaphase ) Random assortment of maternal (blue) and paternal (purple) chromosomes at metaphase
Chart showing average yearly dose of radiation from natural and human-made sources Chart showing average yearly dose of radiation from natural and human-made sources
Video: How antibiotics works? 💊

For a complete list of videos, visit our video library