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ipn [44]
3 years ago
6

According to a study done by a university​ student, the probability a randomly selected individual will not cover his or her mou

th when sneezing is . Suppose you sit on a bench in a mall and observe​ people's habits as they sneeze. ​(​a) What is the probability that among randomly observed individuals exactly do not cover their mouth when​ sneezing
Mathematics
1 answer:
solniwko [45]3 years ago
5 0

Complete Question

According to a study done by a university student, the probability a randomly selected individual will not cover his or her mouth when sneezing is 0.267 Suppose you sit on a bench in a mall and observe people's habits as they sneeze

(a) What is the probability that among 18 randomly observed individuals exactly 6 do not cover their mouth when sneezing?

Answer:

P(X=6)=(0.162)

Step-by-step explanation:

From the question we are told that:

Sample size n=18

Probability P=0.267

No. that do not cover their mouth when sneezing x=6

Generally the equation for The Binomial distribution is mathematically given by

Parameters

B(18,0.267)

Therefore

P(X=x)=(18..x)(0.267)^x(1-0.267)^{18-x}

Where

x=6

Therefore

P(X=6)=(18..6)(0.267)^6(1-0.267)^{18-6}

P(X=6)=(0.162)

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