ments Score: 0 of 1 pt 5 of 8( ns 3.2.27 E Question Help The probability that a

Question

ments Score: 0 of 1 pt 5 of 8( ns 3.2.27 E Question Help The probability that a person in the United States has type B blood is 7% Five unrelated people in the United States are selected at random Complete parts a) through (d) (a) Find the probability that all five have type B' blood The probability that all five have type B' blood is 01 king utoring (Round to six decimal places as needed.) Connect Enter your answer in the answer box and then click Check Answer parts Clear All Next Previous 9/24/2018 to search

Explanation / Answer

X ~ Binomial (n,p)

Where n = 5 , p = 0.07

Binomial probability distribution is

P(X) = nCx px (1-p)n-x

a)

P(X = 5) = 5C5 0.075 0.930

= 0.000002

b)

P(X = 0) = 5C0 0.070 0.935

= 0.696

c)

P(X >= 1) = 1 - P( X = 0)

= 1 - 0.696

= 0.304

d)

The event is considered unusual if probability of occuring that event is less than 0.05.

The event in part a) is ususual because its probability is less than or equal to 0.05

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