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It is known that the “Stats is Awesome” webpage takes on average 7 seconds to load...

It is known that the “Stats is Awesome” webpage takes on average 7 seconds to load (µ = 7) with a population standard deviation of 2 seconds (σ = 2).

(a) What is the probability that the loading time will be less than 3 seconds? [2 marks]

(b) What is the probability that the loading time will be between 6 and 9 seconds? [4 marks]

math   Statistics-And-Probability   
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