Quiz2c_KEY_Sp11 - Name:...

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Unformatted text preview: Name: _______________KEY_____________________________ 4 February 2011 IE330 Spring 2011 Quiz #2c Confidence intervals ( 29 ( 29 2 2 2 /2 /2, 1 /2 2 2 /2, 1 1 /2, 1 1 1 (1- ) / n / n n n n n s n s p p x z x t s p z n ------ Single sample tests ( 29 2 2 2 1 / / (1 ) n S X X X np Z T Z n s n np p ---- = = = =- 1 Name: _______________KEY_____________________________ 2 Name: _______________KEY_____________________________ 3 Name: _______________KEY_____________________________ 1. (10 points) The t-table allows you to identify values corresponding to an integration of what type of distribution? ( Note: Either just d or c and d are acceptable. The infinity row of the t-table shows the integration results for the standard normal distribution. ) a. Normal b. Chi-squared c. Standard normal d. A t-distribution e. None of the above 2. (10 points) In order to use /2 / n x z to compute a confidence interval on an estimate of mean, which of the following must be true (select all that are true)?an estimate of mean, which of the following must be true (select all that are true)?...
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Quiz2c_KEY_Sp11 - Name:...

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