Question 944426: Use Binomial Probabilities and find probability that for the certain number of trials 8 and probability of success in each trial 0.3 number of successes will be:
1) Exactly 4
2) Less than 4
3) More than 4 for 8, 0.3, 4
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Use Binomial Probabilities and find probability that for the certain number of trials 8 and probability of success in each trial 0.3 number of successes will be:
I use a TI-84 to get the following::
1) Exactly 4
P(x = 4) = 8C4*0.3^4*0.7^4 = binompdf(8,0.3,4) = 0.1361
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2) Less than 4
P(0<= x <4) = binomcdf(8,0.3,3) = 0.8059
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3) More than 4 for 8, 0.3, 4
P(5<= x <=8) = 1 - binomcdf(8,0.3,4) = 0.0580
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Cheers,
Stan H.
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