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Mathematics, 01.11.2019 06:31 segobins

Which of the following statements are true? a) the sample mean is an unbiased estimate of the population mean. b) the z-critical value is an estimate of the population mean. c) the t-critical value is an estimate of the population standard deviation. d) the sample standard deviation is an unbiased estimate of the population standard deviation. e) none of the above.

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