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

Author Question: The college daily reported: 450 students living in university housing were polled. 270 said that ... (Read 71 times)

bobypop

  • Hero Member
  • *****
  • Posts: 539
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
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
Thanks for the timely response, appreciate it


flexer1n1

  • Member
  • Posts: 373
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

For a complete list of videos, visit our video library