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Q. Foofy studies if hearing an argument in favour of an issue alters participants â€^TM attitudes toward issue one way or other. She presents a 30-second argument to 8 people. In a national survey about this issue, _ Î¼= 50. She obtains X = 53.25 also s2 X = 569.86. (a) What are H0 also Ha? (b) What is tobt? (c) With Î± =.05, what is tcrit? (d) If appropriate, compute confidence interval for Î¼ (e) What conclusions
should Foofy draw about relationship?

(a) What statistical principle should Foofy is concerned with?

(b) Identify three problems with her study from a statistical perspective.

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