A tax accountant would like to test the claim that the proportion of individuals who owe when filing their taxes is greater than 0.20. If the z− test statistic was calculated as z=1.94, does the tax accountant have enough evidence to reject the null hypothesis? Assume α=0.05.

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A: Null hypothesis H0:mu equals 20 Alternate hypothesis H1:mu not equals  20

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A: The Formula for z value is : z=Xˉ1−Xˉ2- (μ1-μ2)σ12n1+σ22n2

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Q: A random sample of 430 observations produced a sample proportion equal to 0.39. Find the critical…

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Q: a population with a mean of u=45, a score of X=54 corresponds to z=1.50. What is the population…

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A: t-statistic = 3.34 p-value = 0.001

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Q: Assuming all other factors are held constant, if the df value for a two-tailed t-test with a = .05…

A: From the given information we want to find the critical value.