Question

The interarrival times ∆t, for customers into the store are assumed to be all normally distributed with mean μ = 8 minutes and standard deviation σ = 2 minutes, so that ∆t ∼ N(μ, σ2) = N(8, 4), in units of minutes. a. Compute Pr(∆t < 0) and use this to argue that it is unnecessary to truncate ∆t so that it is always non-negative. b. Compute the probability that the 16th and the 9th customer arrive within 55 minutes of each other.

Answer 1

F (x - mean standahd daviation Hunu A) 0.0000316 Phobab umneussabty to trumcale and Standasd darahem 1*9) : 2 x (3)