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# Eyespot is a disease in corn that is caused by a fungus. An agricultural researcher investigated whether the presence of eyespot necessitated treatment of a cornfield using fungicide. The table shows the relationship between the presence of eyespot in a cornfield and the need to use fungicide.

According to the table, what fraction of the cornfields where an eyespot was observed needed fungicide?

## The correct answer is: 0.75

### The fraction of the corn fields where an eyespot was observed need fungicide is the probability of fungicides needed out of the eye spot observed field.

Total no. of fungicide needed fields where eyespot is observed = 30 (given in the table)

Total no. of fields where eyespot is observed = 40 (given in the table)

∴ probability = = (or) 0.75

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