How would you use a completely randomized experiment in each of the following se

Question

How would you use a completely randomized experiment in each of the following settings? Is a placebo being used or not? Be specific and give details. (a) A charitable nonprofit organization wants to test two methods of fundraising. From a list of 1,000 past donors, half will be sent literature about the successful activities of the charity and asked to make another donation. The other 500 donors will be contacted by phone and asked to make another donation. The percentage of people from each group will be compared. (Select all that apply.) 1After the donation collection period, compare the average or total amount collected from each of the two treatment groups. 2Randomly select 500 donors to receive the literature and 500 donors to receive the phone call. 3A placebo is being used for the remaining 900 donors. 4A placebo is not being used. 5After the donation collection period, calculate the average or total amount collected from the 500 donors in the treatment group. 6Randomly select 100 donors to receive the literature and 900 donors to receive the phone call.

Explanation / Answer

a) Use a random number generator to choose the 500 donors to receive the letter. Forexample, you could choose 500 numbers from 1 to 1000 with the table, and those would be the 500donors to receive the letter. Then compare the percentages of people from each group who makedonations. There is no placebo

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