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The mean noise level of 20 areas designated as "casualty doors"in a hospital was 63.1 dBA with a standard deviation of 4.1 dBA.The mean noise level for 24 areas designated as "operatingtheaters" was 56.3 dBA with a standard deviation of 7.5 dBA. At α =0.05, can it be concluded that there is a difference in the means?Use a t-test to make your decision. Answer true is we shouldconclude that there is a difference and false if we cannot concludethat there is a difference. True or False?
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