Suppose a national polling agency conducted 100 polls in a year, using proper random sampling, and...
Suppose a national polling agency conducted 100 polls in a year, using proper random sampling, and reported a 95% confidence interval for each poll. About how many of those confidence intervals would be wrong, that is, would not cover the true population value?
a. about ____intervals
Homework Answers
95% confidence interval means about (100 - 95) i.e. 5 intervals would not cover the true population value.
The answer is 5
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Suppose a national polling agency conducted 100 polls in a year,
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