According to the Educational Testing Service, the scores of people taking the SAT in 1980 were as listed in Table 3.1. a Estimate the average and standard deviation of SAT scores for students whose families made at least $18,000 and for those whose families made no more than $6000. b Do these results have any implications for college admissions?

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TABLE 3.1 Data on SAT Scores Range 200-250 251-300 301-350 351-400 401-450 451-500 501-550 551-600 601-650 651-700 701-750 751-800 Number Having Family Income ≥$18,000 ************* * 325 4,212 13,896 26,175 37,213 41,412 37,400 28,151 17.992 9,284 3,252 415 Number Having Family Income <$6000 ***** HOTEL 3 Comman 1638 7980 9622 8973 8054 6663 4983 3119 1626 686 239 17