It is suggested that the noise level produced by an electric drill of a particular brand follows a lognormal distribution with mean 95 dB and standard

It is suggested that the noise level produced by an electric drill of a particular brand follows a lognormal distribution with mean 95 dB and standard deviation 2 dB.a) What is the probability that the noise level exceeds 97 dB?b) What is the probability that the noise level is between 92 and 98 dB?c) The noise level is lower than what value with 95% probability?

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