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Mathematics
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OpenStudy (anonymous):
The results of a statewide exam for assessing the mathematics skills of realtors were normally distributed with a mean score of 72 and a standard deviation of 15. The realtors who scored in the top 20% are to receive a special certificate, while those in the bottom 15% will be required to attend a remedial workshop. a. What minimum score does a realtor need in order to avoid the workshop? b. What score does a realtor need in order to receive the certificate?
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