Business Stats Probability

Statistics
Tutor: None Selected Time limit: 1 Day

Three defective electric toothbrushes were accidentally shipped to a drugstore by Cleanbrush Products along with 17 nondefective ones.

a.

What is the probability the first two electric toothbrushes sold will be returned to the drugstore because they are defective? (Round your answer to 3 decimal places.)

  Probability

Aug 28th, 2015

Thank you for the opportunity to help you with your question!

probability = probablility the first tooth brush is defective and probability the 2nd tooth brush is deffective

= 3/20 *2/19 = 0.01579 = 0.016

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Aug 28th, 2015

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