In an AOL survey of Internet users, this question was posted online: "Have you ever been hit by a computer virus?" Among the 170,063 responses, 63% answered "yes." What term is used to describe this type of survey in which the people surveyed consist of those who chose to respond? What is wrong with this type of sampling method? What term is used to describe this type of survey? Select all that apply. O A. The respondents are a population. O B. The respondents are a census. O c. The respondents are a self-selected sample. O D. The respondents are a voluntary response sample.

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A: Introduction There are 2 types sampling methods: Prob. methods Non-Prob. methods

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Q: Bopulation proportion of 1943 adults who were total abstainers and p, represent the population…

A: Solution: Given N1=1100,  X1=429 N2=1100,  X2=374 (α)= 0.05

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Q: 1950, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you on…

A: In 1950, Total adults n1=1100                       x1=374 In recent year…

Q: Which of the following are sources of sampling error and which are sources of nonsampling error?

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.