This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The weights of items produced by a company are normally distributed with a mean of 4.5 ounces and a ... (Read 101 times)

cagreen833

  • Hero Member
  • *****
  • Posts: 544
on: Jun 24, 2018
The weights of items produced by a company are normally distributed with a mean of 4.5 ounces and a standard deviation of 0.3 ounce.
 a. What is the probability that a randomly selected item from the production will weigh at least 4.14 ounces?
 b. What percentage of the items weighs between 4.8 and 5.04 ounces?
  c. Determine the minimum weight of the heaviest 5 of all items produced.
  d. If 27,875 items of the entire production weigh at least 5.01 ounces, how many items have been produced?

Question 2

The Highway Safety Department wants to study the driving habits of individuals. A sample of 41 cars traveling on the highway revealed an average speed of 60 miles per hour and a standard deviation of 7 miles per hour. The population of car speeds is approximately normally distributed. Determine a 90 confidence interval estimate for the speed of all cars.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

djpooyouma

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. .8849
b. 12.28
c. 4.99 ounces
d. 625,000

Answer to Question 2

58.16 to 61.84


cagreen833

  • Member
  • Posts: 544
Reply 2 on: Jun 24, 2018
:D TYSM

frankwu0507

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

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

The site of Dmanisi has produced some of the earliest H. erectus outside of Africa. The site of Dmanisi has produced some of the earliest H. erectus outside of Africa.
Christian Gladu, The Bungalow Company, The Birch, North Town Woods, Bainbridge Christian Gladu, The Bungalow Company, The Birch, North Town Woods, Bainbridge
This headache remedy was “guaranteed” by the drug company; 1906. This headache remedy was “guaranteed” by the drug company; 1906.
Photochemical smog is produced by a complex series of reactions Photochemical smog is produced by a complex series of reactions
An organizational specialist is hired as a consultant to a company planning to open a coffee ... An organizational specialist is hired as a consultant to a company planning to open a coffee ...
Jia's Fashions recently paid a $2 annual dividend. The company is projecting that its ... Jia's Fashions recently paid a $2 annual dividend. The company is projecting that its ...
Video: Homologous chromosomes during prophase I - Animation

For a complete list of videos, visit our video library