A study of the effects of acid rain on trees in the Hopkins Forest shows that 25 of 100 trees sampled exhibited some sort of damage from acid rain.  This rate seemed to be higher than the 15% quoted in a recent environmetrics article on the average proportion of the damage trees in the Northeast.  Test the appropriate hypothesis at 5% and write your conclusions. Test the following hypothesis Ho:P=0.15 vs Ho:P>0.15. Use alpha = 5%

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Q: Consider the following computer output: Test of mu = 91 vs > 91 Variable N Mean StDev SE Mean x 20…

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Q: Use the effect size 0.47 to answer the following regarding a test of H0: mu1-mu2= 0 (using the .05…

A: The following information is available in the question Effect size=0.47μ1-μ2=0n1=75n2=125

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Q: (d) You run the analysis and the p-value is 0.9, α = 0.001 and β = 0.01. If you fail to reject H0,…

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Q: Use the effect size 0.47 to answer the following regarding a test of H0: mu1-mu2= 0 (using the .05…

A: Effect size, d = 0.47 Here, our null hypothesis is,  H0:δ=0 v.s. H1:δ≠0 n1 = 50 and n2 = 150. Level…

Q: Ho:µ1 = µ2 You wish to test the following claim (Ha) at a significance level of a Ha:µ1 > µ2 You…

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Q: Given the following data and using Jamovi, test (at an alpha of 0.05) whether type of music…

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Q: he Road Department is trying to see whether they should buy road treatments ( in tons) for storms…

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Q: Listed below are the number of cricket chirps in 1 min and the corresponding temperatures in degrees…

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Q: Statewide, social workers have an average annual salary of $29,000. A random sample of 159 social…

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.