The formula to calculate standard deviation from probability is \sqrt(n*p*(1-p)). n is the sample size, and 200 in this case (number of putts for practice). p is 80% or 0.8, the probability that he can make it. So the standard deviation is \sqrt(200*0.8*(1-0.8)=\sqrt(200*0.8*0.2)=\sqrt(16)=4.
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Answer:
The ferry needs to make 5 trips.
Step-by-step explanation:
All we need to do is divide the numbe of trips by how many cars at a time.
37 ÷ 8 = 4.62500
4.62500 ≈ 5
Answer:
544 units^2
Step-by-step explanation:
Please see attached picture for full solution.