Massachusetts school systems are considered to be the best in the nation; 18.2% of Massachusetts 8th graders achieved an advanced-level performance on the math portions of their national exams. This is more than twice the national rate. If a random sample of 250 8th graders was selected, what is the probability that more than 20% achieved an advanced-level performance on their math portion? 0.8413 0.2304 0.7696 0.5626 0.4374

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 50E: Flexible Work Hours In a recent survey, people were asked whether they would prefer to work flexible...
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Massachusetts school systems are considered to be the best in the nation; 18.2% of Massachusetts 8th graders achieved an advanced-level performance on the math portions of their national exams. This is more than twice the national rate. If a random sample of 250 8th graders was selected, what is the probability that more than 20% achieved an advanced-level performance on their math portion?



Massachusetts school systems are considered to be the best in the nation; 18.2% of Massachusetts 8th graders achieved an advanced-level performance on the math portions of their national exams. This is more than twice the national rate. If a random sample of 250 8th graders was selected, what is the probability that more than 20% achieved an advanced-level performance on their math portion?


0.8413

0.2304

0.7696

0.5626

0.4374

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