<span>This is a matter of knowing the formulas involving the binomial distribution:
Mean = n*p = 125*0.46 = 57.5
Variance = n*p*(1-p) = 125*0.46*(1-0.46) = 125*0.46*0.54 = 31.05
Standard Deviation = sqrt(Variance) = sqrt(31.05) = 5.572252686</span>
Antonio put 4.6 pounds of flower into each stack since 23 pounds divided by 5 stacks is 4.6
The answer would be b because you are just multiply
It's 77.472 , but since you probably need too round it will be 77.5
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