[R] beta binomial distribution

[Akram Alhadainy]

Hi,
I need to write two inequalities depend on cumulative distribution (CDF) of
beta binomial distribution where alpha and beta are unknown and need to
find them.
 CDF of betabinomial(2,10,alpha,beta) <0.3<=CDF of
betabinomial(3,10,alpha,beta)
and
 CDF of betabinomial(5,10,alpha,beta) <0.8<=CDF of
betabinomial(6,10,alpha,beta)
How I can do that using r studio package?
I tried to do that using pbetabinom but it gives error and could not
discover this function? How I can define this distribution in r studio?
Thank you,
Akram

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