Math Is Fun Forum

MKNB

Guest

Probability (2)

Question : 
a)                  It is noticed that 70% of certain population of student like to wear jeans. A random sample of ten of those student is chosen. What is probability that no
                     one wear jeans.
b)                  The incidence of an occupational disease in an industry is such that the workmen have 20% chance of suffering from it . What is probability that out of
                     6 workmen none will contract the disease

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,855

Re: Probability (2)

Hi MKNB,

a) Required probability =

students out of 10 students.
b) Probability of having the disease = 20%. Probability of not having the disease = 80%.
Probability not contracting the disease =

workmen out of 6 workmen. Required probability = 80%.

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