# Question

Assume that the background noise X of a digital signal has a normal distribution with μ = 0 volts and σ = 0.5 volt. If we observe n = 100 independent measurements of this noise, what is the probability that at least 7 of them exceed 0.98 in absolute value?
(a) Use the Poisson distribution to approximate this probability.
(b) Use the normal distribution to approximate this probability.
(c) Use the binomial distribution to approximate this probability

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