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

Author Question: In order to estimate the average time spent on the computer terminals per student at a local ... (Read 92 times)

RODY.ELKHALIL

  • Hero Member
  • *****
  • Posts: 591
on: Jun 24, 2018
In order to estimate the average time spent on the computer terminals per student at a local university, data were collected from a sample of 81 business students over a one-week period. Assume the population standard deviation is 1.2 hours. If the sample mean is 9 hours, then the 95 confidence interval is approximately _____.
 a. 7.04 to 110.96 hours
  b. 7.36 to 10.64 hours
  c. 7.80 to 10.20 hours
  d. 8.74 to 9.26 hours

Question 2

The weight of football players is normally distributed with a mean of 200 pounds and a standard deviation of 25 pounds. What percent of players weigh between 180 and 220 pounds?
 a. 34.13
  b. 68.26
  c. 0.3413
  d. None of the answers is correct.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jackie

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jun 24, 2018
Answer to Question 1

d

Answer to Question 2

d


RODY.ELKHALIL

  • Member
  • Posts: 591
Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

Bigfoot1984

  • Member
  • Posts: 321
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Organizational Effects of Testosterone Around the time of birth, testosterone masculinizes and defem Organizational Effects of Testosterone Around the time of birth, testosterone masculinizes and defem
In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it. In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it.
Healthier choices can be made when time is taken to read a nutrition label. Healthier choices can be made when time is taken to read a nutrition label.
A student creates a new blog about chemistry. A student creates a new blog about chemistry.
In 2000, the average charge of tax preparation was 95 . Assuming a normal distribution and a ... In 2000, the average charge of tax preparation was 95 . Assuming a normal distribution and a ...
Computer reconstructions of the diversity in neurons that exist across species Computer reconstructions of the diversity in neurons that exist across species
Video: New DNA Strand Replication

For a complete list of videos, visit our video library