Mathematics, 23.10.2020 19:00 harleyandpope90
Stella has x in her checking account. She goes to the Dollar Store and spends $23.75. Now she has $9.30 left in the account. How much did Stella have in her account before she went to the store?
Answers: 3
Mathematics, 21.06.2019 20:30
The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle
Answers: 1
Mathematics, 22.06.2019 03:30
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$79.79. the population standard deviation for the repair of type i ovens is known to be $19.18$19.18. a sample of 5555 type ii ovens has a mean repair cost of $75.24$75.24. the population standard deviation for the repair of type ii ovens is known to be $21.40$21.40. conduct a hypothesis test of the technician's claim at the 0.050.05 level of significance. let μ1μ1 be the true mean repair cost for type i ovens and μ2μ2 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.
Answers: 2
Stella has x in her checking account. She goes to the Dollar Store and spends $23.75. Now she has $9...
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