The probability of contracting a stomach virus while visitin

The probability of contracting a stomach virus while visiting Mexico is 60%. Find the probability that amongst 15 students visiting Mexico

Solution

The probability of contracting a stomach virus while visiting Mexico is 60%. Find the probability that amongst 15 students visiting Mexico Exactly five students contract a stomach virus:

a) .0245

b) .9755

c) .2938

d) .7068

e) None of the above

Binomial distribution used

p=0.6

n-15

p( x=5) =0.0245

More than one student contracts a stomach virus

P( x >=1) =0.9999989