Probability
Independent Trials and Bernoulli Trials
Grade 12
Question:
<p>p1 = P(max >= 81). Find 625/4 * p1.</p>
Step-by-Step Solution
Key Concept: P(max >= 81) = 1 - P(all <= 80) = 1 - (0.8)^3 = 1 - 0.512 = 0.488.
<p>p1 = 61/125. (625/4)*(61/125) = 5*61/4 = 76.25.</p>
Correct Answer: 76.25