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

Author Question: A professor at a local community college noted that the grades of his students were normally ... (Read 85 times)

Lin Shi

  • Full Member
  • ***
  • Posts: 131
on: Mar 25, 2023

Question 1

A manufacturing process produces items whose weights are normally distributed. It is known that 22.57% of all the items produced weigh between 100 grams up to the mean and 49.18% weigh from the mean up to 190 grams. Determine the mean and the standard deviation.



Question 2

A professor at a local community college noted that the grades of his students were normally distributed with a mean of 74 and a standard deviation of 10.  The professor has informed us that 6.3 percent of his students received A's while only 2.5 percent of his students failed the course and received F's.


a.

What is the minimum score needed to make an A?

b.

What is the maximum score among those who received an F?

c.

If there were 5 students who did not pass the course, how many students took the course?

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by Lin Shi on Mar 25, 2023

char00char

  • Full Member
  • ***
  • Posts: 173
Reply #1 on: Mar 25, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly


Lin Shi

  • Member
  • Posts: 131
Reply 2 on: Mar 25, 2023
YES! Correct, THANKS for helping me on my review

Animal_Goddess

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

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

Changes in College Enrollment, By Sex Changes in College Enrollment, By Sex
College 2.0 (Online) College 2.0 (Online)
Drinking Alcohol use by college students Drinking Alcohol use by college students
Red Bull uses strategies that help it target college-aged, young-adult consumers Red Bull uses strategies that help it target college-aged, young-adult consumers
college meme college meme
Nancy borrowed $8000 from her grandfather to buy a car when she started college. The interest ... Nancy borrowed $8000 from her grandfather to buy a car when she started college. The interest ...
Video: Red Blood Cells - Erythropoietin (EPO)

For a complete list of videos, visit our video library