2201_Quiz2B_KEY

# 2201_Quiz2B_KEY - Revised 2201_Quiz2B_KEY EXST 2201 Quiz 2B...

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Revised 01/19/2010 2201_Quiz2B_KEY.docx Page 1 of 2 EXST 2201 Quiz 2B KEY Answers Tips Answers Tips 1A. All of the above. 3A. t -Test of the mean. 1B. 1.65 ݖ ଴.଴ହ = 1.65 3B. μ = 0.16 1C. 2.58 ݖ ଴.଴ଵ = 2.58 3C. μ > 0.16 1D. –1.18 0 47.1 50 12 24 z = 3D. Reject the null. 1E. Do not reject the null. 2A. s known, σ unknown 2B. +1.44 0 107 100 34 49 t = 2C. 1.753 0.05 ,15 1 1.753 t = 2D. +1.143 0 77 75 7 16 t = 2E. Do not reject the null.

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