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2. The response times on an online computer terminal have approximately a gamma distribution with mean 4 seconds and variance
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per let, Xt a random Variable dende penge times on an online Computertime end xn amma (dB) Given that (x)-4 and r) = 8 E(X)=exceed response time would . Probability thate the Saeemds in P(x 75) -P(x55 - - 2 (6 x e 22 dx 2-22 + + 2 - 16 + + + () - 0

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