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Blood type AB is found in only 3% of the population†. If 310 people are chosen at random, find the probability of the following. (Use the normal approximation. Round your answers to four decimal places.)

(a) 5 or more will have this blood type

(b) between 5 and 10 will have this blood type

Respuesta :

MeIsBella
 These are both binomial distribution problems n=195, p=.03 

with a TI 84 calculator( 2nd vars B) 

a) 1-binomcdf(195,.03,4) = .6983 

b) binomcdf(195,.03,10)-binomcdf(195,.03,4) = .6639
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