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Borachio eats at the same fast food restaurant every day. Suppose the time X between the moment Borachio enters the restaurant and the moment he is served his food is normally distributed with mean 4. 2 minutes and standard deviation 1. 3 minutes. Find the probability that average time until he is served in eight randomly selected visits to the restaurant will be at least 5 minutes

Sagot :

Answer:

0.2692... or 26.92%

Step-by-step explanation:

1. X is normally distributed. X ~ N(4.2, 1.3)

2. Use an online calculator or stats enabled calculator to compute

P(X>5) = 0.2692

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