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fall 07 test 3 page003

fall 07 test 3 page003 - n 5‘0 Q A< Qua Some busine s...

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Unformatted text preview: n: 5‘0 Q» A< Qua Some busine s analysts esti te that the length of time . -. :ple work at a ' . - = . : -- z: - . 6.2 years. You are an empl er and s ...-ev that people are leaving yo company i d. on the average. You rando In elec® ployee records and fin- ; ‘ - F- company ° ears With a standard deviation . ears. Is this enough evidence to conclude that the people at - a . company stay a shorter amount 0 : '- at the .05 level of significance? Do the complete test of hypothesis without a confidence interval. You may assume the vali ity cons 'nts are meta 0 dfir 22%“. “We gTEP i 'H’o )J, :1; G t Z— ](5 you. 422. 45+th < (or Z yrs f WWW‘QSW ...
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