| Length | Frequency | |---|---| | 0 - 19 | 17 | | 20 - 39 | 38 | | 40 - 59 | 19 | |…

MATHEMATICS · Multi-part · CBSE · Mathematics · Probability · Probability

Problem

LengthFrequency
0 - 1917
20 - 3938
40 - 5919
60+4
Jose surveyed the length of TV commercials (in seconds). Find, to 3 decimal places, the experimental probability that the next TV commercial will last: (1) 20 to 39 seconds (2) at least one minute (3) between 20 and 59 seconds (inclusive).

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