Question

Assume that when an adult is randomly​ selected, the probability that they do not require vision correction is 17​%. If 12 adults are randomly​ selected, find the probability that exactly 3 of them require vision correction. Round in three decimal places.

Answer 1

Solution :

The probability that they do not require vision correction is 17​%

P(do not require vision correction) =0.17

P(require vision correction) = 1 - 0.17 = 0.83

Probability that exactly three of them require vision correction is given by,

So, probability = 0.000 (Round to three decimal places)

Also calculated by Excel BINOMDIST(3,12,0.83,0)

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