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Dec 24, 2019 in Data Science
Q: In any 15-minute interval, there is a 20% probability that you will see at least one shooting star. What is the proba¬bility that you see at least one shooting star in the period of an hour?

1 Answer

Dec 24, 2019

Probability of not seeing any shooting star in 15 minutes is

=   1 – P( Seeing one shooting star )

=   1 – 0.2          =    0.8

Probability of not seeing any shooting star in the period of one hour

=   (0.8) ^ 4        =    0.4096

Probability of seeing at least one shooting star in the one hour

=   1 – P( Not seeing any star )

=   1 – 0.4096     =    0.5904

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