Answer: 4
Step-by-step explanation:
For any binomial variable X having parameters n (total number of trials ) and p (probability of getting success in each event), the standard deviation is given by :-

As per given , we have
n= 100 , p= 20%=0.20
Then, the standard deviation of this binomial distribution is :

Hence, the standard deviation of this binomial distribution is <u>4</u>.
If you mean the garden's area in feet, it would be 7200 ft^2
Answer:
answer will be option c tan x
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There are 3600 seconds in an hour
60(60) = 3600
divide amount of miles with 3600 seconds
50/3600 = 0.01388....
0.01389 (rounded) miles is your answer
hope this helps