The concentration of particles in a suspension is 30 per mL.
a. What is the probability that a 2 mL sample will contain more than 50 particles?
b. Ten 2 mL samples are drawn. What is the probability that at least 9 of them contain more than 50 particles?
c. One hundred 2 mL samples are drawn. What is the probability that at least 90 of them contain more than 50 particles?
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