Question: It is known that the average weekly rate of US production worker is $600. Assume

that the distribution of wage is normal with a standard deviation of $100.

1. What is the median weekly wage rate?
2. What is the probability that a production worker earn between $500 and $800?
3. What is the probability that a production worker earn more than $800?
4. What percent of production workers earn more than $1000 per week?
5. What is the probability that a sample of size 50 workers has an average weekly salary of more than $700.

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