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In a certain article, laser therapy was discussed as a usefulalternative to drugs in pain management of chronically illpatients. To measure pain threshold, a machine was used thatdelivered low-voltage direct current to different parts of the body(wrist, neck, and back). The machine measured current inmilliamperes (mA). The pretreatment experimental group in the studyhad an average threshold of pain (pain was first detectable) at 𝜇 =3.27 mA with standard deviation 𝜎 = 1.06 mA. Assume that thedistribution of threshold pain, measured in milliamperes, issymmetric and more or less mound-shaped. (Round your answers to twodecimal places.) (a) Use the empirical rule to estimate a range ofmilliamperes centered about the mean in which about 68% of theexperimental group will have a threshold of pain from 1.7Incorrect: Your answer is incorrect. mA to 4.6 Incorrect: Youranswer is incorrect. mA (b) Use the empirical rule to estimate arange of milliamperes centered about the mean in which about 95% ofthe experimental group will have a threshold of pain.