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Mathematics, 22.09.2019 13:00 morbidodyssey
Match the perfect square trinomials with their factors 4a2 + 4a + 1 (2 + a)(2 + a) 4a2 β 4a + 1 (2a + 1)(2a + 1) 4 β 4a + a2 (2a β 1)(2a β 1) 4 β 4a β a2 (2 β a)(2 β a) 4 + 4a + a2
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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 $79.79$β’79.79. the population standard deviation for the repair of type i ovens is known to be $19.18$β’19.18. a sample of 5555 type ii ovens has a mean repair cost of $75.24$β’75.24. the population standard deviation for the repair of type ii ovens is known to be $21.40$β’21.40. conduct a hypothesis test of the technician's claim at the 0.050.05 level of significance. let ΞΌ1ΞΌ1 be the true mean repair cost for type i ovens and ΞΌ2ΞΌ2 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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Match the perfect square trinomials with their factors 4a2 + 4a + 1 (2 + a)(2 + a) 4a2 β 4a + 1 (2a...
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