andrbp2000 andrbp2000

18-02-2024
Mathematics

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What is the probability that at most 8 out of 10 independently selected specimens have a hardness of less than 73.84?

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ritotamborxd ritotamborxd

18-02-2024

Step-by-step explanation:

(d) The probability that each specimen has hardness less than 73.84 is p = Φ((73.84 − 70)/3) = Φ(1.28) = . 9. So out of 10 independent specimens, the probability that 8 or fewer have hardness less than 73.84 is B(8,10,. 9) = 0.2639.

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