Shaver Manufacturing Inc. offers dental insurance to its employees. A recent study by the human resource director shows the annual cost per employee per year followed the normal probability distribution, with a mean of $1,280 and a standard deviation of $420 per year. Use Appendix B.3.
What probability of the employees costs between $1,500 and $2,000 per year? (Roundz-score computation to 2 decimal places and your final answer to 4 decimal places.)
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