Question: For a normal probability density function, (operatorname{Prob}[-3 sigma leq x(t) leq 3 sigma]) is a. 0.6827 b. 0.999937 c. 0.9973

For a normal probability density function, \(\operatorname{Prob}[-3 \sigma \leq x(t) \leq 3 \sigma]\) is

a. 0.6827

b. 0.999937

c. 0.9973

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