Probability-average salary assembly line workers is higher

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Reference no: EM13139526

1. Suppose the salary of assembly line workers has Normal distribution with mean of $20,000, and standard deviation of $3,000.

a) What is the probability that a randomly selected assembly line worker earns more than $22,000?

b) What is the probability that the average salary of 5 assembly line workers is higher than $22,000?

c) What is the probability that the average salary of 15 assembly line workers is higher than $22,000?

Reference no: EM13139526

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