Mathematics, 29.07.2019 19:20, jovellabreu12
Engineers on the bay bridge are measuring tower rods to find out if any rods have been corroded from salt water. there are rods on the east and west sides of the bridge span. one engineer plans to measure the length of an eastern rod 25 times and then calculate the average of the 25 measurements to estimate the true length of the eastern rod. a different engineer plans to measure the length of a western rod 20 times and then calculate the average of the 20 measurements to estimate the true length of the western rod. suppose the engineer who collected 25 measurements for the eastern rod has a mean length of 23.9 feet with a standard deviation of 0.5 feet. the critical t-value for a 90% (one-sample) confidence interval with df = 24 is t=1.71. which of the following is the resulting 90% confidence interval?
Answers: 1
Mathematics, 21.06.2019 15:10, Mistytrotter
Solve the system by the elimination method. x + y - 6 = 0 x - y - 8 = 0 when you eliminate y , what is the resulting equation? 2x = -14 2x = 14 -2x = 14
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Mathematics, 21.06.2019 23:00, edisonsitesuper9312
Joey is asked to name a quadrilateral that is also a rhombus and has 2 pairs of parallel sides. should be his answer
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Isabelle is mixing red and blue paint to make purple paint she adds 3/10 of a fluid ounce of red to 12/25 of a fluid ounce of blue to make 1 1/30 fluid ounces of purple how many fluid ounces of red paint ounces of red paint will she need to make 3 fluid ounces of purple paint
Answers: 1
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