WebWe want to find P($20,000 X ≤ $30,000). To solve, let Z = (X - $25,000)/$10,000. Note that when x = $20,000, z = ($20,000 - $25,000)/$10,000 = -0.5, and when x = $30,000, z = +0.5. Hence, P($20,000 ≤ X ≤ $30,000) = P(-.5 ≤ Z ≤.5) = 2F(.5) - 1 = 1.383 - 1 = .383. Thus, about 38% of the taxpayers will benefit from the new law. V. WebFind the following x values given the following information. The upper case X is notation. Find the lower case x. The mean (u) is 2.5 and the standard deviation (o) is 2. a. P (X> x) = 0.025 b. P (x≤x≤2.5) = 0.4943 This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts.
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Probability Distributions - Wyzant Lessons
WebJun 22, 2024 · The polynomial of degree 3, P(x), has a root of multiplicity 2 at x=1 and a root of multiplicity 1 at x=−2. The y -intercept is y=−0.6 . Find a formula for P(x) . WebSearchOnMath: A powerful search engine for mathematical formulas with LaTex support. WebStatistics and Probability questions and answers. Let X be normally distributed with mean μ = 2.5 and standard deviation σ = 2. [You may find it useful to reference the z table.] a. … spirit of 76 glider