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mean birth weight exceeds 3540 grams. 16. A population of students took an aptitude test. Their scores were normally distributed, with mean of 78.6 and standard deviation of 6.4. A nearby university will admit students who score at least 91 on this test. (a) What percentage of students in this population qualify to attend the university? Nearest tenth of a percent. (b) Your score is 2.4 standard deviations above the mean. Will you be admitted if you apply? You must justify your answer to earn credit