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

Author Question: A local university administers a comprehensive examination to the candidates for B.S. degrees in ... (Read 107 times)

sjones

  • Hero Member
  • *****
  • Posts: 520
on: Jun 24, 2018
A local university administers a comprehensive examination to the candidates for B.S. degrees in Business Administration. Five examinations are selected at random and scored. The scores are shown below. Grades 80 90 91 62 77
 a. Compute the mean and the standard deviation of the sample.
  b. Compute the margin of error at 95 confidence.
  c. Develop a 95 confidence interval estimate for the mean of the population. Assume the population is normally distributed.

Question 2

A sample of 144 commuters in Boston indicated that they commute an average of one hour and thirty minutes per day. The standard deviation of the sample was 36 minutes. Compute the 95 confidence interval for the average commute time of the population (in minutes).


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fdliggud

  • Sr. Member
  • ****
  • Posts: 366
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. Mean = 80, S = 11.77 (rounded).
b. 14.61
c. 65.39 to 94.61

Answer to Question 2

84.12 to 95.88


sjones

  • Member
  • Posts: 520
Reply 2 on: Jun 24, 2018
Gracias!

AmberC1996

  • Member
  • Posts: 317
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Amniocentesis. In this examination procedure, amniotic fluid is aspirated with a syringe that is ins Amniocentesis. In this examination procedure, amniotic fluid is aspirated with a syringe that is ins
The Local Group The Local Group
A patient examination room should be simple and efficiently designed. A patient examination room should be simple and efficiently designed.
Mental Status Examination Mental Status Examination
After multiple injections of a local anesthetic, the patient developed herpetic lesions. After multiple injections of a local anesthetic, the patient developed herpetic lesions.
The client is positioned for the examination The client is positioned for the examination
Video: Bone Growth and Remodeling

For a complete list of videos, visit our video library