Question: Please Only R should be used for plots and calculations. An aircraft manufacturer is attempting to determine if the average leg length of the adult

Please Only R should be used for plots and calculations.

An aircraft manufacturer is attempting to determine if the average leg length of the adult male has changed from 44". A sample of 81 men was selected randomly and the average length was found to be 45.5", with a population standard deviation of 5.5". 1. State the null and alternate hypothesis 2. Test the null hypothesis at = 0.05. State your conclusion with justification.

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