Quiz+_22 - MGT 2250 — Quiz #21 Answers: 1) Acme...

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Unformatted text preview: MGT 2250 — Quiz #21 Answers: 1) Acme Landscapers assumes an average 2 hour time for the planting of a medium-size tree, and uses this figure in estimating total costs for proposed jobs. Several managers have become concerned that this is not accurate and is too short a time. A sample of actual, tree plantings was measured precisely as to the time they took and the following data (in hours) was obtained: 1.9 2.3 23.4 2.5 1.8 2.2 2.3 Assuming the population was normally distributed: a) Formulate the hypotheses for a test to determine whether the mean time to plant a tree exceeds 2 hours. Hwflia “0.1/1 7; 1.)) Compute a point estimate of the population mean. "‘ “ fix 15.9/ ><- WM 2 / ’“ 1: 7’1.» w X e) Compute a, point estimate of the population standard deviation. 2f (364;)? X ><~ ~52 C1571 "L 509 waft, (I) At alpha=0.05, what is the rejection point — tw and What is the rejection ru 6? tTS 7 ) [thq‘ET/T/ Z710 X: (i 16: ‘77,“ / I figpgawowcéb/zép 2/995 9) Compute the value of the test statistic t“. 40%,(12/Q0‘W ‘ 2-:— Q‘z/g CST": firsw F “if” 7““ 032' 7, ,Qé 6T3 m} 524572» a W “0% ...
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This note was uploaded on 02/05/2012 for the course MGT 2250 taught by Professor Milne during the Summer '08 term at Georgia Institute of Technology.

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Quiz+_22 - MGT 2250 — Quiz #21 Answers: 1) Acme...

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