Mathematics, 17.12.2020 02:10 sandram74691

From past experience, it is known 90% of one-year-old children can distinguish their mother's voice from the voice of a similar sounding female. A random sample of 20 one-year-olds are given this voice recognition test. Find the probability at least 3 children do not recognize their mother's voice. (Please answer in terms of a decimal, eg 0.12)

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From past experience, it is known 90% of one-year-old children can distinguish their mother's voice...

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