# When we say a sample estimate is unbiased this means

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8.3When we say a sample estimate is “unbiased” this means a.The confidence interval for the sample estimate excludes 0 b.The sample observations are iid c.The expected value of the sample estimate is equal to the population parameter d.None of the above
8.4The variance of a sample estimate is
8.5The assumption that the observations are “independent and identically distributed” in a linear regression, yi= 0+ 1xi+ pertains to i,
i
1
8.6The power of a test is the complement of the error rate when:
8.7A p-value represents a.The probability that your results are correct b.The probability that your model is correct c.The probability of the hypothesis given the data d.The probability of the data given the hypothesis e.None of the above