MathCastle
StatisticsMediumData and Displays

Data and Displays · Medium problem

A histogram of 3232 quiz scores uses the bins 50–5950–59, 60–6960–69, 70–7970–79, 80–8980–89, 90–9990–99 with counts 2,5,8,9,82, 5, 8, 9, 8 (in that order). What percent of the scores are at least 8080? Express your answer as a common fraction or decimal.