5. The amount of nicotine in a cigarette produced by a tobacco company is a random variable with mean 2.2 mg and standard deviation 0.3 mg. Taking 100 randomly chosen cigarettes, let. Xi denote the nicotine content of the ith cigarette for i = 1, . .., 100, and let X := no Ziz Xi be the sample mean of the nicotine content. Approximate the probability that X is higher than 2.3 in terms of the CDF 4 of M(0, 1)