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Please show all steps: In a given year, 24% of the people in a community use...

Please show all steps:

In a given year, 24% of the people in a community use the emergency room at the local hospital. A random sample of 26 people is selected.   

A researcher wishes to know the probability that a fixed number of individuals in the sample will have used the emergency room in the last year.


a)   Find the probability that in a sample of 26, exactly 9 people used
the emergency room

b) Find the probability that in a sample of 26,  9 or fewer people used
the emergency room.

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Answer #1

Ar_Bindame २. ६, ०.१५) S १ (X 49) = २66 (०.२५(0.76) 0.077 px=X) = 16 ( 8 ) (P) -२ 26-2 b) P( X = 9 )= 2 २६८ । ०.२५) (०.९) O.9

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