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 113 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
YES! Correct, THANKS for helping me on my review

atrochim

  • Member
  • Posts: 331
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Skin ¬examination. Skin ¬examination.
Chemical structures of ester and amide local anesthetics Chemical structures of ester and amide local anesthetics
Breast self examination Breast self examination
Typical Examination Room Equipment and Supplies Typical Examination Room Equipment and Supplies
Breast self-examination. Breast self-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.
Video: Erythropoietin (EPO)

For a complete list of videos, visit our video library