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(1) Consider a Chi-square distribution with degrees of freedom, df =7 I What is the mean?;...

(1) Consider a Chi-square distribution with degrees of freedom, df =7 I What is the mean?; II. the standard deviation, for this distribution?

(2) Consider a Chi-square distribution for a categorical variable with 4 levels. I. What is the degrees of freedom for this distribution? II. The chi-square test statistic was calculated to be 8.012. What is the p-value for this distribution?

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