Author Question: The average price of cell phones manufactured by Ahmadi, Inc is 98 with a standard deviation of 12 . ... (Read 115 times)

Hungry!

  • Hero Member
  • *****
  • Posts: 1,071
The average price of cell phones manufactured by Ahmadi, Inc is 98 with a standard deviation of 12 . Furthermore, it is known that the prices of the cell phones manufactured by Ahmadi are normally distributed.
 a. What percentage of cell phones produced by Ahmadi, Inc. will have prices of at least 120.20?
  b. Cell phones with prices of at least 81.80 will get a free gift. What percentage of the cell phones will be eligible for the free gift?
  c. What are the minimum and the maximum values of the middle 95 of cell phone prices?
  d. If 7,218 of the Ahmadi cell phones were priced at least 119.00, how many cell phones were produced by Ahmadi, Inc.?

Question 2

In a regression analysis, the coefficient of determination is .4225 . The coefficient of correlation in this situation is
 a. .65 if b1 is positive.
  b. .1785.
  c. -.18 if b1 is negative.
  d. .4225.



yahahah24021

  • Sr. Member
  • ****
  • Posts: 323
Answer to Question 1

a. 3.13
b. 91.15
c. Minimum Price 74.48 Maximum Price 121.52
d. 180,000

Answer to Question 2

a



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

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

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?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

For a complete list of videos, visit our video library