No 15. If on the average 20% of seniors develop influenza during a given year, t

Question

No 15. If on the average 20% of seniors develop influenza during a given year, the probability that 3 out of 15 seniors at a nursing home will develop in- fluenza is: (a) 0.85 (b) 0.75 (c) 0.65 (d) 0.35 (e) 0.25 od cells can be subclassified as: basophils, eosinophils, monocytes, lymphocytes In a normal adult the respective proportions of these 5 categories is: baso 0.5%, 4%, lympho 34% and neutro 60%. An excess of eosino is consistent with reaction; an excess of lympho with viral; and an excess of neutro with bacterial nono

Explanation / Answer

p is 0.2

N is 15

P(x=3)= 15C3*(0.2)^3*(0.8)^12 =BINOM.DIST(3,15,0.2,FALSE) =0.25014 OR option E

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