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

Author Question: Does including a gift with a request for a donation influence the proportion who will make a ... (Read 78 times)

V@ndy87

  • Hero Member
  • *****
  • Posts: 571
Does including a gift with a request for a donation influence the proportion who will make a donation? This question was investigated in a recent study. Letters were sent to a large number of potential donors in Japan. The letter requested a donation for funding schools in Mali. The letter recipients were assigned at random to one of three groups. Those in the first group received a letter with no gift. Those in the second group received a letter that included a small gift (a postcard), and those in the third group received a letter with a larger gift (four postcards). The response of interest was whether or not the letter resulted in a donation.
  We wish to perform a hypothesis test to determine if there is convincing evidence that the proportions for the two donation categories are not the same for all three types of requests. What is the value of the test statistic for this test?
  1.12.388
  2.5.207
  3.9.502
  4.11.411
  5.14.141

Question 2

Use a calculator to determine which of the following combinations of X2 and df has a P-value of 0.130.
  1. X2 = 34.52, df = 13
  2. X2 = 39.25, df = 16
  3. X2 = 26.00, df = 19
  4. X2 = 14.44, df = 6
  5. X2 = 32.32, df = 20



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

vickyvicksss

  • Sr. Member
  • ****
  • Posts: 351
Answer to Question 1

5

Answer to Question 2

3



V@ndy87

  • Hero Member
  • *****
  • Posts: 571
Both answers were spot on, thank you once again




 

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

For a complete list of videos, visit our video library