Question

Case Study - 3

Computer-based learning (CBL) refers to any teaching methodology that makes use of computers for information transmission. At an elementary school level, computer applications can be used to display multimedia lesson plans. A survey was done on 1000 elementary and secondary schools of Assam and they were classified by the number of computers they had.



| Number of Computers | $1-10$ | $11-20$ | $21-50$ | $51-100$ | $101$ and more |
|---|---|---|---|---|---|
| Number of Schools | $250$ | $200$ | $290$ | $180$ | $80$ |

One school is chosen at random. Then:

(i) Find the probability that the school chosen at random has more than 100 computers.

Solution

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