Brian usually brushes his teeth in the morning, but 10% of the time he forgets. What is the probability that he will forget to brush his teeth three days in a row (Assume that forgetting one day does not influence any other day.)

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05-06-2022
Mathematics

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Brian usually brushes his teeth in the morning, but 10% of the time he forgets. What is the probability that he will forget to brush his teeth three days in a row (Assume that forgetting one day does not influence any other day.)

Sagot :

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Joaobezerraidn Joaobezerraidn · Answer 1 · 2022-06-07T08:30:21-04:00

Using it's concept, it is found that there is a 0.001 = 0.1% probability that he will forget to brush his teeth three days in a row.

What is a probability?

A probability is given by the number of desired outcomes divided by the number of total outcomes.

In this problem, for each day, there is a 0.1 probability that he forgers to brush his teeth, and days are independent, hence for 3 consecutive days the probability is given by:

p = (0.1)³ = 0.001.

More can be learned about probabilities at https://brainly.com/question/14398287

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Sagot :

What is a probability?

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