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iris [78.8K]
3 years ago
12

In a certain town, 23% of males have a beard. In random samples of 25 men from

Mathematics
1 answer:
Gemiola [76]3 years ago
6 0

Answer:

Mean    μ = 5.75

Standard deviation  σ = 2.1041

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the size of the sample 'n' = 25

Given proportion p= 23% = 0.23

Let 'X' be the random variable in a binomial distribution

Mean    μ = np = 25 × 0.23 = 5.75

<u><em>Step(ii):-</em></u>

Standard deviation

          σ = √npq

         σ = \sqrt{25 X 0.23 X0.77}

        σ = 2.1041

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Answer:

The answer is "19".

Step-by-step explanation:

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