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 49 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
Excellent

adf223

  • Member
  • Posts: 304
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

The endocrine glands of the endocrine system are distributed throughout the body. The endocrine glands of the endocrine system are distributed throughout the body.
First-pass effect: (a) drugs are absorbed; (b) drugs enter hepatic portal circulation and go directl First-pass effect: (a) drugs are absorbed; (b) drugs enter hepatic portal circulation and go directl
Reading and Writing Disorders Produced by Brain Damage Reading and Writing Disorders Produced by Brain Damage
Morris and Company, Sussex Rush-Seated Chairs. Morris and Company, Sussex Rush-Seated Chairs.
Items that would be difficult to replace bearing legal significance are sent by certified mail. Items that would be difficult to replace bearing legal significance are sent by certified mail.
Ladder with weights Ladder with weights
Video: Lower Limb Arteries Animation

For a complete list of videos, visit our video library