SOLUTION: If a thumbtack is dropped, the probability of its landing point up is 2/5. Mrs. Johnson drops 10 tacks whle putting up the lunch menus for the week on the bulletin board. Find the

Question 143056: If a thumbtack is dropped, the probability of its landing point up is 2/5. Mrs. Johnson drops 10 tacks whle putting up the lunch menus for the week on the bulletin board. Find the probability that at least 6 point up.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If a thumbtack is dropped, the probability of its landing point up is 2/5. Mrs. Johnson drops 10 tacks whle putting up the lunch menus for the week on the bulletin board. Find the probability that at least 6 point up.
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Using a TI calculator I get:
1 - binomcdf(10,(2/5),5) = 0.1662386....
Cheers,
Stan H.
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