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 41 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
YES! Correct, THANKS for helping me on my review

Kedrick2014

  • Member
  • Posts: 359
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

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

Mendel's breeding program that produced a 9 : 3 : 3 : 1 ratio Mendel's breeding program that produced a 9 : 3 : 3 : 1 ratio
The Hanuman langur, a widely distributed Asian colobine. The Hanuman langur, a widely distributed Asian colobine.
The WISC-IV: Sample Items The WISC-IV: Sample Items
The Stillwater Mining Company The Stillwater Mining Company
Responses Produced by Activation of Specific Opioid Receptors Responses Produced by Activation of Specific Opioid Receptors
This headache remedy was “guaranteed” by the drug company; 1906. This headache remedy was “guaranteed” by the drug company; 1906.
Video: Supine Position

For a complete list of videos, visit our video library