The sample survey in Exercise 20.23 actually called 130 seniors, but 30 of theseniors
Chapter 0, Problem 20.24(choose chapter or problem)
The sample survey in Exercise 20.23 actually called 130 seniors, but 30 of theseniors refused to answer. This nonresponse could cause the survey result to be inerror. The error due to nonresponse(a) is in addition to the margin of error found in Exercise 20.23.(b) is included in the margin of error found in Exercise 20.23.(c) can be ignored because it isnt random.
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