A study about a sequence of coin flips, each with an unknown probability of success ( p ), is carried out until the 4th success occurs, and it's observed that a total of 40 trials are needed. (a) Use th
a) ( p = 4/40 )
b) ( p = 1/10 )
c) ( p = 1/4 )
d) ( p = 1/40 )