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Population with mean µ

Dr. Saba M. Alwan. Population with mean µ. Sampling Distribution of The mean. ,. Not- normal. Normal. σ is known. σ is Unknown. σ is Unknown. σ is known. n ≥ 30. n < 30. Not in study. Estimation. Dr. Saba M. Alwan. Population with mean µ. A good Point estimate for µ is.

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Population with mean µ

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  1. Dr. Saba M. Alwan Population with mean µ Sampling Distribution of The mean , Not- normal Normal σ is known σ is Unknown σ is Unknown σ is known n ≥ 30 n < 30 Not in study

  2. Estimation Dr. Saba M. Alwan Population with mean µ A good Point estimate for µ is Interval Estimation or (C.I) for the mean µ Not- normal Normal σ is known σ is Unknown σ is Unknown σ is known n ≥ 30 n < 30 Not in study

  3. Testing Dr. Saba M. Alwan Sample size Test statistic in testing hypothesis for the mean μ : n<30 n≥30 σ is known σ is Unknown σ is Unknown σ is known normal or not normal normal not normal Not in study

  4. Estimation Dr. Saba M. Alwan A good point estimate for (μ1 - μ2) is Sample sizes Interval Estimation or (C.I) for the mean (μ1 - μ2) at α: n1 and n2 <30 (Small) n1, n2 ≥30 (Large) normal or not normal normal not normal σ1 , σ2 Unknown But Equal σ1 and σ2Unknown σ1 , σ2 known σ1 , σ2 known Not in study

  5. Testing Dr. Saba M. Alwan Sample sizes Test statistic in testing hypothesis for the difference d = (μ1 - μ2) : n1, n2 ≥30 (Large) n1 and n2 <30 (Small) normal or not normal normal not normal σ1 , σ2 Unknown But Equal σ1 and σ2Unknown σ1 , σ2 known σ1 , σ2 known Not in study where d = (μ1 - μ2)

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