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What is the power of this test if the true mean

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Reference no: EM132168946

For a certain wine, the mean pH (a measure of acidity) is supposed to be 3.44 with a known standard deviation of σ = .11. The quality inspector examines 26 bottles at random to test whether the pH is too low, using a left-tailed test at α = 0.1.

(a) What is the power of this test if the true mean is μ = 3.42? (Round your Z-value to 3 decimal places and final answer to 4 decimal places.)

Power

(b) What is the power of this test if the true mean is μ = 3.40? (Round your Z-value to 3 decimal places and final answer to 4 decimal places.)

Power

(c) What is the power of this test if the true mean is μ = 3.38? (Round your Z-value to 3 decimal places and final answer to 4 decimal places.)

Power

Reference no: EM132168946

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