« previous next »

Author Question: The average price of cell phones manufactured by Ahmadi, Inc is 98 with a standard deviation of 12 . ... (Read 137 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 liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

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?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Overview of Cell Signaling Overview of Cell Signaling
Forms of Cell signalling Forms of Cell signalling
Stem Cell Research Could Expand Clinical Use of Regenerative Human Cells Stem Cell Research Could Expand Clinical Use of Regenerative Human Cells
Blood Stem cell classification Blood Stem cell classification
A diagram of a generalized human cell A diagram of a generalized human cell
An antigen-presenting dendritic cell (blue) interacting with a T cell (yellow) An antigen-presenting dendritic cell (blue) interacting with a T cell (yellow)
Video: What are Taste Receptors? How Does it Work? Animation

For a complete list of videos, visit our video library