1. Conceptual Questions About Confidence Intervals

True or False?

1. A confidence interval is a range of "plausible" values for a population parameter based on sample data
2. A confidence Interval for the unknown population mean is an interval of plausible values for the population mean.

My guess is that they are both true but I am not 100% sure. I keep getting confused on the two. Can anyone help?

2. Re: Conceptual Questions About Confidence Intervals

Originally Posted by michellederz
True or False?

1. A confidence interval is a range of "plausible" values for a population parameter based on sample data
2. A confidence Interval for the unknown population mean is an interval of plausible values for the population mean.

My guess is that they are both true but I am not 100% sure. I keep getting confused on the two. Can anyone help?
1 is true. When you have a confidence interval of some parameter of your population at level C you're saying I'm C% confident that the population parameter lies in this interval given the population samples I've observed. C is usually 90% or 95%

Since the population mean is just a parameter of the population 2 is also true.