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Mathematics, 21.06.2019 20:30
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Atechnician compares repair costs for two types of microwave ovens (type i and type ii). he believes that the repair cost for type i ovens is greater than the repair cost for type ii ovens. a sample of 6767 type i ovens has a mean repair cost of $79.79$â˘79.79. the population standard deviation for the repair of type i ovens is known to be $19.18$â˘19.18. a sample of 5555 type ii ovens has a mean repair cost of $75.24$â˘75.24. the population standard deviation for the repair of type ii ovens is known to be $21.40$â˘21.40. conduct a hypothesis test of the technician's claim at the 0.050.05 level of significance. let Îź1Îź1 be the true mean repair cost for type i ovens and Îź2Îź2 be the true mean repair cost for type ii ovens. step 2 of 4 : compute the value of the test statistic. round your answer to two decimal places.
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Mathematics, 22.06.2019 05:30
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X=-3 which is a positive value? a x b x^2 c x^3 d x+3...
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