This topic contains a solution. Click here to go to the answer

Author Question: A local university administers a comprehensive examination to the candidates for B.S. degrees in ... (Read 108 times)

sjones

  • Hero Member
  • *****
  • Posts: 520
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
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
Wow, this really help


amcvicar

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Gracias!

 

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

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

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

For a complete list of videos, visit our video library