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

Author Question: The college daily reported: 450 students living in university housing were polled. 270 said that ... (Read 68 times)

bobypop

  • Hero Member
  • *****
  • Posts: 539
on: Jul 25, 2018
The college daily reported: 450 students living in university housing were polled. 270 said that they were satisfied with their living conditions. Based on this survey we conclude that 60 of students living in dormitories are satisfied.
 
  The margin of error of the study is  5 percentage points (with a 95 degree of confidence). Which statement is correct?
  A) The margin of error is consistent with the sample size.
  B) A larger sample should be used to achieve the stated margin of error.
  C) There is not enough information to determine whether the margin of error is consistent with the sample size.
  D) The stated margin of error could have been achieved with a smaller sample size.

Question 2

A researcher finds that of 1000 people who regularly attend a religious service, 31 would stop to help a person with car trouble.
 
  Of 1200 people interviewed who do not regularly attend a religious service, 22 would stop to help a person with car trouble. At the 0.05 significance level, do the data provide sufficient evidence to conclude that those who regularly attend a religious service are more likely to stop and help a person with car trouble?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ynlevi

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 25, 2018
Answer to Question 1

D

Answer to Question 2

H0: p1 = p2, Ha: p1  p2.
 = 0.05
Test statistic: z = 1.93. P-value = 0.0536
Do not reject the null hypothesis. At the 5 significance level, the data do not provide sufficient evidence to conclude that those who regularly attend a religious service are more likely to stop and help a person with car trouble.


bobypop

  • Member
  • Posts: 539
Reply 2 on: Jul 25, 2018
Gracias!

shailee

  • Member
  • Posts: 392
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

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?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

An Edmontosaurus bone that was excavated in Alaska and tested at Temple University. An Edmontosaurus bone that was excavated in Alaska and tested at Temple University.
A phylogenetic tree of all living things A phylogenetic tree of all living things
Luna Park at Coney Island was a vast living theater in which strollers were both spectators and acto Luna Park at Coney Island was a vast living theater in which strollers were both spectators and acto
Women who reported one, two, or three or more major life events in the past 5 years were ... Women who reported one, two, or three or more major life events in the past 5 years were ...
Working and Living and Playing in the City Dump of Phnom Penh, Cambodia Working and Living and Playing in the City Dump of Phnom Penh, Cambodia
Energy flows from the environment into living organisms, then back to the environment Energy flows from the environment into living organisms, then back to the environment
Video: Vascular tissues in a corn stem and a buttercup root

For a complete list of videos, visit our video library