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Mathematics, 24.06.2019 08:30 tordiacasey
Every user of statistics should understand the distinction between statistical significance and practical importance. a sufficiently large sample will declare very small effects statistically significant. let us suppose that sat mathematics (sat) scores in the absence of coaching vary normally with mean μ = 500 and σ = 100. suppose further that coaching may change μ but does not change σ. an increase in the sat score from 500 to 503 is of no importance in seeking admission to college, but this unimportant change can be statistically very significant. to see this, calculate the p-value for the test of the given hypotheses in each of the following situations.
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Mathematics, 22.06.2019 03:30, dolphinfan321
Bradley and kelly are out flying kites at a park one afternoon. a model of bradley and kelly's kites are shown below on the coordinate plane as kites brad and kely, respectively: kites adbr and kely are shown on a coordinate plane. the vertices of adbr are a is at 9, 1; d is at 1, 5; b is at 9, 9; and r i which statement is correct about the two kites? (1 point) they are similar because segment br to segment db is 1: 2 and segment ke to segment yk 1: 2. they are not similar because segment br to segment db is 1: 5 and segment ke to segment yk is 1: 2. correct! they are not similar because segment br to segment db is 1: 2 and segment ke to segment yk is 1: 5. they are similar because segment br to segment db is 1: 5 and segment ke to segment yk is 1: 5.
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Mathematics, 22.06.2019 04:50, tashatyron24pejls0
Simonne used the following steps to simplify the given expression. 12-3(-2x+4) step 1: 12+(-)+(-3)(4) step 2: 12+6x+(-12) step 3: 12+(-12)+6x step 4: 0+6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? •identity property of addition •inverse property of addition •associative property of addition •commutative property of addition
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