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 129 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?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

On average, the ratio of carbon to nitrogen is much higher in terrestrial plants than in other major On average, the ratio of carbon to nitrogen is much higher in terrestrial plants than in other major
Average household size Average household size
Average Global Temperatures Average Global Temperatures
Average Annual Growth Rates of Population by Country Group Average Annual Growth Rates of Population by Country Group
Average Number of Days per Year with Thunderstorms Average Number of Days per Year with Thunderstorms
Average Precipitation Acidities and the Effects of Acid Rain Average Precipitation Acidities and the Effects of Acid Rain
Video: Cardiac Cycle (Part 2 of 4)

For a complete list of videos, visit our video library