zammar2022 zammar2022
  • 20-12-2022
  • Mathematics
contestada

) 35% of filling the Income tax independently at the certain area, are senior citizens. A random
sample of 15 independent is selected.
a) Find probability that at most 3 of them are senior citizens
b) Find the expected value
c) Find the standard deviation (round to two decimal places)
(20 pp)

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