Question: 56. The time needed (in hours) for a worker to finish a job is modeled by a lognormal distribution with parameters = 2 and

56. The time needed (in hours) for a worker to finish a job is modeled by a lognormal distribution with parameters μ = 2 and σ2 = 4. Find the following probabilities:

(a) The worker needs at least 50 hours to finish the job.

(b) The worker needs more than 60 hours to finish the job.

(c) The worker needs less than 50 hours to finish the job.

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