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OpenStudy (anonymous):
in 60% of all solar heat installations the utility bill is reduced by 1/3. what is the probability the utility bill will be reduced by at least 1/3 in at least 5 installation?
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OpenStudy (anonymous):
sorry, at least 4 out of 5 installations
OpenStudy (anonymous):
so n=5, p=.60 but what should my x be
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