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 111 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
Great answer, keep it coming :)

pratush dev

  • Member
  • Posts: 321
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Sprain. A sprain involves damage to one or more ligaments, and is categorized into three degrees of Sprain. A sprain involves damage to one or more ligaments, and is categorized into three degrees of
A Recently Discovered Member of the Local Group A Recently Discovered Member of the Local Group
Otoscopic examination Otoscopic examination
Local Anesthetics Local Anesthetics
Selected Local Anesthetics Selected Local Anesthetics
Mental Status Examination Mental Status Examination
Video: HDL (high density lipoprotein)

For a complete list of videos, visit our video library