Question

Which of the following are correct general statements about confidence intervals, as discussed in this class?

(Select all that apply. To be marked correct: All of the correct selections must be made, with no incorrect selections.)

	In general: The higher the confidence level, the wider the associated confidence interval.
	In general: A point-estimate has a positive percentage level of confidence associated with it.
	In general, for a given confidence interval: Confidence levels and probability values are different ideas.
	In general, for a given confidence interval: Confidence levels and probability values are the same idea.
	For a given confidence interval: The confidence level can be understood as the long-run success rate of the method used to generate the interval.
	In general: A point-estimate has a zero-percent level of confidence associated with it.
	In the formula for a Confidence Interval for a Population Proportion p : The z*value (also called the critical value) controls the confidence level.
	In general: The higher the confidence level, the narrower the associated confidence interval.

Answer 1

	In general: The higher the confidence level, the wider the associated confidence interval. (correct due to higher confidence level gives higher critical value )
	In general: A point-estimate has a positive percentage level of confidence associated with it. (not correect)
	In general, for a given confidence interval: Confidence levels and probability values are different ideas. (not correect)
	In general, for a given confidence interval: Confidence levels and probability values are the same idea.(correct because we use probability word to interpret the confidence interval)
	For a given confidence interval: The confidence level can be understood as the long-run success rate of the method used to generate the interval. ((not correect)
	In general: A point-estimate has a zero-percent level of confidence associated with it. ( correect)
	In the formula for a Confidence Interval for a Population Proportion p : The z*value (also called the critical value) controls the confidence level. (correct but it also depends on sample size )
	In general: The higher the confidence level, the narrower the associated confidence interval. (not correct)