Which of these expressions entered into a graphing calculator will return the probability that 450 or fewer heads come up when flipping a coin 500 times?

A. binomcdf( 450, 0.5, 500)
B. binomcdf( 500, 0.5, 450)
C. binomcdf( 450, 500, 0.5)
D. binomcdf( 500, 450, 0.5)

Question

Which of these expressions entered into a graphing calculator will return the probability that 450 or fewer heads come up when flipping a coin 500 times?

A. binomcdf( 450, 0.5, 500)
B. binomcdf( 500, 0.5, 450)
C. binomcdf( 450, 500, 0.5)
D. binomcdf( 500, 450, 0.5)

dan815 · Answer

i dont know im gonna guess D)
Trials, #of successes , Prob of success
seems like the most logical progression