Mathematics, 04.03.2020 05:00 jellybellyje
Researchers wanted to compare the effectiveness of a water softener used with a filtering process with a water softener used without filtering, Ninety locations were randomly divided into two groups of equal size. Group A locations used a water softener and the filtering process, while group B used only the water softener. At the end of three months, a water sample was tested at each location for its level of softness. (Water softness was measured on a scale of 1 to 5, with 5 being the softest water.) The results were as follows. x1-2.1 s1-0.7 x2-1.7 82 0.4 State the null and alternate hypothesis. Graph and shade the critical region. Find the critical value, the point estimate for the difference in population means given by these samples, and it's test statistic. Label these values and areas on your graph above. Find and explain the meaning of the P-value. Shade a graph showing the area equal to the p-value. Clearly state your initial and final conclusion
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Through non-collinear points there is exactly one plane.
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Brainliest ! which of the coordinates are not of th vertices of the feasible region for the system of inequalities y≤4,,x≤5,x+y> 6 a(2,4) b(0,6) c(5,4) d(5,1)
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Jane’s favorite fruit punch consists of pear, pineapple, and plum juices in the ratio 5: 2: 3. how many cups of pear juice should she use to make 20 cups of punch?
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The approximate line of best fit for the given data points, y = −2x − 2, is shown on the graph.which is the residual value when x = –2? a)–2 b)–1 c)1 d)2
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Researchers wanted to compare the effectiveness of a water softener used with a filtering process wi...
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