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
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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