This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The salaries at a corporation are normally distributed with an average salary of 19,000 and a ... (Read 114 times)

altibaby

  • Hero Member
  • *****
  • Posts: 562
on: Jun 24, 2018
The salaries at a corporation are normally distributed with an average salary of 19,000 and a standard deviation of 4,000.
 a. What is the probability that an employee will have a salary between 12,520 and 13,480?
  b. What is the probability that an employee will have a salary more than 11,880?
  c. What is the probability that an employee will have a salary less than 28,440?

Question 2

A small stock brokerage firm wants to determine the average daily sales (in dollars) of stocks to their clients. A sample of the sales for 36 days revealed average daily sales of 200,000 . Assume that the standard deviation of the population is known to be 18,000.
 a. Provide a 95 confidence interval estimate for the average daily sale.
  b. Provide a 97 confidence interval estimate for the average daily sale.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ashely1112

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. .0312
b. .9625
c. .9909

Answer to Question 2

a. 194,120 to 205,880
b. 193,490 to 206,510


altibaby

  • Hero Member
  • *****
  • Posts: 562
Reply #2 on: Jun 24, 2018
Thank you


ashely1112

  • Sr. Member
  • ****
  • Posts: 347
Reply #3 on: Jun 24, 2018
No problemo


« previous next »
 

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Average winter rainfall and variation in rainfall among sites inhabited by Suromalus ater Average winter rainfall and variation in rainfall among sites inhabited by Suromalus ater
Although average brain size increases gradually though time in H. erectus, individuals with small br Although average brain size increases gradually though time in H. erectus, individuals with small br
A Scatterplot of the Test Scores and Average Grades of 10 Students A Scatterplot of the Test Scores and Average Grades of 10 Students
The average weight gain between Thanksgiving and New Year's Day is about a pound The average weight gain between Thanksgiving and New Year's Day is about a pound
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
The following information relates to the Cutting Department of Kittina Corporation for the ... The following information relates to the Cutting Department of Kittina Corporation for the ...
Video: Mycobacterium tuberculosis: Drug Resistance and Natural Selection

For a complete list of videos, visit our video library