Question: The maximum acceptable level for exposure to microwave radiation in the United States is an average of 10 ????Wcm2. It is feared that a large

The maximum acceptable level for exposure to microwave radiation in the United States is an average of 10 ????W∕cm2. It is feared that a large television transmitter may be polluting the air by exceeding a safe level of microwave radiation.

(a) Test Ho∶ ???? = 10 against the alternative hypothesis Ha∶ ???? > 10 with ???? = 0.05 if a sample of 36 readings gives a sample mean of 10.3 ????Wand a sample standard deviation of 2.1 ????W.

(b) Find a 98% confidence interval for ????.

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