50 students live in a dormitory. The parking lot has the capacity for 30 cars. Each student has a car with probability 0.5, independently from other students. Find the probability that there won't be enough parking spaces for all the cars (fewer than 60% of the students have cars).
Added by James E.
Step 1
Given that each student has a car with probability 0.5, the mean is 50 * 0.5 = 25 and the variance is 50 * 0.5 * 0.5 = 12.5. Show more…
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