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Math Help - Conceptual Questions About Confidence Intervals

  1. #1
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    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?
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  2. #2
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    Re: Conceptual Questions About Confidence Intervals

    Quote Originally Posted by michellederz View Post
    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.
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