Suppose 10% of the flights arriving at an airport arrive early, 60% arrive on time, and 30% arrive late. Valerie used the random-number table to find the experimental probability that of 5 flights, at least 2 will arrive late. The digit 0 represents flights arriving early. The digits 1, 2, 3, 4, 5, and 6 represent flights arriving on time. The digits 7, 8, and 9 represent flights arriving late.

Find the experimental probability that of 5 flights, at least 2 will arrive late.

three-tenths
two over five
nine over twenty
eleven over twenty

Question

Suppose 10% of the flights arriving at an airport arrive early, 60% arrive on time, and 30% arrive late. Valerie used the random-number table to find the experimental probability that of 5 flights, at least 2 will arrive late. The digit 0 represents flights arriving early. The digits 1, 2, 3, 4, 5, and 6 represent flights arriving on time. The digits 7, 8, and 9 represent flights arriving late.

Find the experimental probability that of 5 flights, at least 2 will arrive late.

    three-tenths
    two over five
    nine over twenty
    eleven over twenty

anonymous · Answer

So what is the chance of picking a 7,8, or 9?