« previous next »

Author Question: The average price of cell phones manufactured by Ahmadi, Inc is 98 with a standard deviation of 12 . ... (Read 116 times)

Hungry!

  • Hero Member
  • *****
  • Posts: 1,071
on: Jun 24, 2018
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
Reply #1 on: Jun 24, 2018
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
« previous next »
 

Did you know?

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

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

CycleBeads help women use the Standard Days Method. CycleBeads help women use the Standard Days Method.
Normal and sickle-cell hemoglobin. (a) Subtle differences between the conformations of hemoglobin A Normal and sickle-cell hemoglobin. (a) Subtle differences between the conformations of hemoglobin A
Prokaryotic Cell Prokaryotic Cell
Parts of a Cell Parts of a Cell
The synapse and synaptic transmission. (a) A thin cleft, called the synapse, separates one cell from The synapse and synaptic transmission. (a) A thin cleft, called the synapse, separates one cell from
Video: Requirements for nervous signals

For a complete list of videos, visit our video library