Question: The length of time (in seconds) that a user views a page on a Web site before moving to another page is a lognor mal

The length of time (in seconds) that a user views a page on a Web site before moving to another page is a lognor mal random variable with parameters = 0.5 and s = 1.

(a) What is the probability that a page is viewed for more than 10 seconds?

(b) By what length of time have 50% of the users moved to another page?

(c) What is the mean and standard deviation of the time until a user moves from the page?

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