Question

A school administrator tells everyone in the building that they will be having a fire drill randomly sometime during the school day which is from 8 am to 3 pm. If second period is from 9;00 am to 10 am what is the probability of the fire drill happening during second period?

Answer 1

Probability is expressed as

number of favorable outcomes/number of total outcomes

The total number of hours for the drill between 8am and 3pm is 7

The number of hours for the second period between 9am and 10 am is 1

Thus, the probability of the fire drill happening during second period is

1/7