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Answer the below question, please provide steps and calculation. Please do not use handwriting. Question 1: A nurse matron noticed that nurses who joined nurse

Answer the below question, please provide steps and calculation. Please do not use handwriting.

Question 1: A nurse matron noticed that nurses who joined nurse unions are better paid than nurses not in any unions. She decided to investigate if this is true, and gathered some quick information, as follows. Can she conclude that nurses who joined unions are earning more? Use the 2% significance level.

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Sample size Sample average Pop SD hourly salary (RM) Union 40 20.75 2.25 Non-union 45 19.80 1.90

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