The discussion centers on calculating the probability of rolling at least two 4s when tossing a fair die seven times using the TI-84 calculator's binomcdf function. The user correctly applies the formula p(2<=x<=7) = 1 - p(0<=x<=1) = 1 - binomcdf(7,1/6,1), resulting in a probability of 0.330. Other participants confirm the accuracy of the calculation and the use of the binomcdf function.
PREREQUISITESStudents, educators, and anyone interested in probability calculations, particularly those using the TI-84 calculator for statistical analysis.
battery88 said:Homework Statement
If a fair die is tossed 7 times what is the probability of at least two 4s?Homework Equations
The Attempt at a Solution
To solve this I used my TI-84's binomcdf function. I just want to see it I'm doing it correctly.
p(2<=x<=7) = 1 - p(0<=x<=1) = 1 - binomcdf(7,1/6,1) = 0.330
Thanks.