Author Question: Express in your own words the procedure for finding the area under the standard normal curve between ... (Read 81 times)

big1devin

  • Hero Member
  • *****
  • Posts: 583
Express in your own words the procedure for finding the area under the standard normal curve between z = 0 and z = 1.53.

Question 2

An auditor for a large oil corporation has taken a random sample of monthly credit card charges for 32 individual (non-corporate) accounts. She found a mean of 81.76 . Assume that the population standard deviation is 48.2 . A 98 confidence interval estimate for the population mean of individual credit card charges would be:
 a. 81.76  19.89.
  b. 81.76  16.72.
  c. 81.76  112.94.
  d. 81.76  22.0.
  e. 81.76  2.33.



CharlieArnold

  • Sr. Member
  • ****
  • Posts: 319
Answer to Question 1

Use the standard normal table in text. Trace down the left hand column to 1.5 and go across the row until reaching the column headed at the top with .03. The value is 0.4370, which is the area between z = 0 and z = 1.53.

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

For a complete list of videos, visit our video library