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OpenStudy (anonymous):

A class has 3 Teaching Assistants (TAs). Each TA tosses a coin 10 times. Find the chance that at least one of the TAs gets exactly 5 heads. unanswered

OpenStudy (dan815):

or in other words what is the probability when no TA gets 5 heads

OpenStudy (dan815):

@FibonacciChick666 help us with this

OpenStudy (fibonaccichick666):

k so lets make a chart with the outcomes

OpenStudy (fibonaccichick666):

strike that cause it will take forever ok what is the probability that 1 TA will get exactly 5 heads?

OpenStudy (dan815):

im thinking its like this for 1 TA

OpenStudy (dan815):

i dunno im kinda confused about this whole thing

OpenStudy (fibonaccichick666):

hmm let me think.... ughh I'm so annoyed we did this in 6th grade why can't I remember...

OpenStudy (fibonaccichick666):

at least not all 3 duh ok

OpenStudy (fibonaccichick666):

ok so you would think that it would be more likely right

OpenStudy (dan815):

hmm

OpenStudy (fibonaccichick666):

but coins are weird because the prob for hhhhhh= prob for tthhtt

OpenStudy (dan815):

is itt like this

OpenStudy (dan815):

for 1 TA getting 5 heads

OpenStudy (dan815):

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