Question: An elevator has its operation blocked if its load exceeds 450 kg. Knowing that the weight of an adult is a random variable with normal

An elevator has its operation blocked if its load exceeds 450 kg. Knowing that

the weight of an adult is a random variable with normal distribution, the average being 70 kg and

the standard deviation equal to 15 kg, calculate the probability of the block occurring in an attempt to

carry 6 adults.

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