(Answered) The dean has observed for several years and found that the

Statistics

The dean has observed for several years and found that the probability distribution of the salary of the alumni's first job after graduation is normal, with a mean of $50k per year and a standard deviation of $5k. Please show all work, as I want to learn this skill.

(a) What's the probability that the alumni get a salary of $45k or more in their first jobs?

(b) What's the chance that the alumni get a salary between $35k and $55k?

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