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 129 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
Wow, this really help

hramirez205

  • Member
  • Posts: 345
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

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.
Responses Produced by Activation of Specific Opioid Receptors Responses Produced by Activation of Specific Opioid Receptors
How many grams of H2 gas can be produced by the reaction of 54.0 grams of Al(s) with an excess ... How many grams of H2 gas can be produced by the reaction of 54.0 grams of Al(s) with an excess ...
If the random variable x is exponentially distributed with parameter λ = 4, then P(x ≤ ... If the random variable x is exponentially distributed with parameter λ = 4, then P(x ≤ ...
The hormone leptin is produced in fat cells, moves through the blood, and binds to receptors in the The hormone leptin is produced in fat cells, moves through the blood, and binds to receptors in the
What nuclide is produced when K-43 decays by beta emission? What nuclide is produced when K-43 decays by beta emission?
Video: Fetal development - Weeks 9 to 38

For a complete list of videos, visit our video library