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ccording to recent research, about 21% of the US working population does not save any money
for etirement. Suppose that an accountant randomly selects 60 us workers and assume that the
sample atisfies the conditions for a Binomial Experiment. 4. What is the probability that less than
10 workers do not save any money for retirement? P(x<10){x=9x=060(0.21)x(0.79)60x=0.1629
5. What is the probability that exactly 15 workers do not save any money for retirement?
P(x=15=60C15(0.21)15(0.79)45=0.0896 6. What is the probability that 20 or fewer workers do
not save any money for retirement?

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ccording to recent research, about 21 of the US working population d.pdf

  • 1. ccording to recent research, about 21% of the US working population does not save any money for etirement. Suppose that an accountant randomly selects 60 us workers and assume that the sample atisfies the conditions for a Binomial Experiment. 4. What is the probability that less than 10 workers do not save any money for retirement? P(x<10){x=9x=060(0.21)x(0.79)60x=0.1629 5. What is the probability that exactly 15 workers do not save any money for retirement? P(x=15=60C15(0.21)15(0.79)45=0.0896 6. What is the probability that 20 or fewer workers do not save any money for retirement?