Test1b_KEY_Sp11

# Test1b_KEY_Sp11 - Name_KEY 9 February 2011 IE330 Spring...

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Name: _______________KEY______________________ 1 of 10 9 February 2011 IE330 Spring 2011 Test 1b No calculators, closed book, closed notes. Do not tear off any pages. Once you are finished, turn in the test and leave quietly.

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Name: _______________KEY______________________ 2 of 10 Confidence intervals 2 2 2 /2 /2, 1 /2 2 2 /2, 1 1 /2, 1 1 1 ˆ ˆ (1- ) ˆ / n / n n n n n s n s p p x z x t s p z n Single sample tests 0 2 2 0 0 0 0 0 0 2 0 0 0 1 / / (1 ) n S X X X np Z T Z n s n np p Mean and variance 2 1 1 1 n n i i i i x x x x s n n
Name: _______________KEY______________________ 3 of 10 1 8 worth 6 points each, except 5, which was worth 4 points; 9 and 10 worth 28 points each 1. Which of the below is the proper definition of power? a. P(Reject H0|H0 is true) b. P(Reject H0|H0 is false) c. P(Fail to reject H0|H0 is true) d. P(Fail to reject H0|H0 is false) e. None of the above is correct 2. Suppose a 99% confidence interval on a mean is [103.5, 143.5]. Which of the following are true (choose all that are correct)?

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