Suppose the study described in the previous question was conducted by a colleague.  He tells you that based on a chi-square distribution with 2 degrees of freedom, his p-value was 0.11, and he concludes that the proportions are not the same across health status categories.  Do you agree with his conclusion? Yes, by rejecting the null hypothesis, it does appear that the proportions are not the same.     Yes.  He should have not rejected the null hypothesis and concluded that they do not appear to be related.     Yes. a p-value > 0.05 always indicates that variables are related regardless of the test conducted

Q: [t (47) = -8.21, p = .03] Based on the parenthetical statement given above, what is the sample size…

A: The t-critical value at 47 degrees of freedom is -0.82.

Q: A news article that you read stated that 58% of voters prefer the Democratic candidate. You think…

A: Solution: Given data: p= .58 x= 150 n =30 Level of significance = 0.05 To Test the claim:   58% of…

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A: The hypothesis test is a statistical method in which one using the sample data try to check the…

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Q: there anything else about the experiment in Question 2 which would cast doubt on the reliability of…

A: Given Group of Motorist % of new compound Average mm  1 5 8 2 5.5 8.4 3 6 8.6 4 6.5 8.8…

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A: It given that the p value 0.08, which was not significant at the 0.05 level.

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A:

Q: 1. Suppose you were to explain to a person who has not yet studied statistics that a statistical…

A: Here to check: H0 : μ = 0      vs  H0 : μ ≠ 0        If the null hypothesis gets rejected at a 5%…

Q: You wish to test the following claim (Ha) at a significance level of a = 0.10. H.:µ1 = µ2 TH > Il:®H…

A:

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A: Given: α=0.005p^1=35.3%=0.353n1=626p^2=31.9%=0.319n2=457Thus, p^=n1p^1+n1p^1n1+n2…

Q: You wish to test the following claim (H) at a significance level of a = 0.005. H₂:1 = 12 Ha: ₁ > 2…

A:

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A: Given data  X = 186 N = 1100 Alpha = 0.05 P= 14.8%.  = 0.148

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A: Given Information: First population 291 successes in a sample of size = 638. Sample proportion (p^1)…

Q: 1. Suppose you were to explain to a person who has not yet studied statistics that a statistical…

A: Answer is in the next step.

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A: The value of the test statistic is  and the objective is to give the approximate p-value to the…

Q: ou wish to test the following claim (Ha) at a significance level of a = 0.05. Ho: 1 = 42 You believe…

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A: There are 4 predictors, Youths, young adults, adults and seniors. So k= 4 Then k-1= 4-1= 3

Q: Given the following sample statistics X(bar) = 20, Y(bar) = 200, Sx = 100, Sy = 60, Rxy = 0.4, n =…

A: Given, x¯=20y¯=200sx=100sy=60Rxy=0.4n=50

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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.