What is the probability they will have type O blood and Rh negative?

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Q: The mean ar the series {a over time. The first diff {at} has with a very la

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Q: Let {e} be a zero mean white noise process. Suppose that the observed process is Y₁ = et + Oet - 1,…

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Q: What is the sample mean?

A: We have given confidence interval  CI = (13.9​,22.9​)