Fifty seeds were selected at random from each of 5 bags of seeds, and were kept under standardized conditions favorable to germination. After 20 days, the number of seeds which had germinated in each collection were counted and recorded as follows

What is the probability of germination of
(i) more than 40 seeds in a bag?
(ii) 49 seeds in a bag?
(iii) more that 35 seeds in a bag?

Explanation

1. Since 50 seeds were selected at random from each of 5 bags.
Since bag 1 contains 40 seeds , bag 2 contains 48 seeds , bag 5 contains 45 seeds .
So, there are total of 5 bags and from that there are 3 bags which contains more than 40 seeds.
So, the probability will be 3/5.
2. There are no bags which contains 49 seeds in a bag
So, the probability of germination of 49 seeds in the bag will be 0.
3. We have to find the probability of more than 35 seeds in the bag
Since bag 1 contains 40 seeds , bag 2 contains 48 seeds , bag 3 contains 40 seeds , bag 5 contains 45 seeds.Since, there are 4 bag which
contains more than 35 seeds in a bag.
So, the probability will be = 4/5