Question 371919
 What is the probability that the number of heads will be less than or equal to 1200 out of 2500 tosses?
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Binomial Problem with n = 2500 ; p = 1/2
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Using a TI-84 I get:
P(x <= 1200) = binomcdf(2500,0.5,1200) = 0.0238
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define X_k ={5 if H; 10 if H <---- should be on next line in braket 
Comment: That does not make any sense.
Cheers,
Stan H.