A confidence interval is ______.
A) the lower and upper boundaries of the confidence interval
B) a statistical interval around a point estimate (the mean) that provides a specified level of confidences for the true population parameter
C) a range of numbers that tells us the probability that our estimate is wrong
D) range of values for a variable that has a stated probability of containing an unknown population mean
Correct Answer:
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Q1: The estimates of the mean and proportion
Q3: A confidence interval is equal to
Q4: If a research reports "The margin
Q5: As sample sizes _, the sample means
Q6: For a sample of 29 individuals, we
Q7: For a sample of 30 individuals, we
Q8: In the equation for the standard
Q9: In the equation for confidence intervals,
Q10: A confidence level of 90% is what
Q11: A confidence level of 95% is what
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