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FromTheMoon [43]
3 years ago
5

Randys garden has 3 rows of carrot with 3 plants in each row. next year he plans to plant 4 times the number of rows of 3 plants

. how many plants will he have next year?
Mathematics
1 answer:
Gnesinka [82]3 years ago
5 0
He will have 36 plants next year. 
hope that helped! :)
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Answer:

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Step-by-step explanation:

Since both variables are independent but they have the same probability parameter, you can interpret that like if the experiment that models each try in both variables is the same. When you sum both random variables toguether, what you obtain as a result is the total amount of success in n1+n2 tries of the same experiment, thus X1+X2 have distribution Bi(n1+n2, p).

b)

Note that, if X2 = k, then X1+X2 = 1 is equivalent to X1 = 1-k. Since X1 and X2 are independent, then P(X1+X2 = 1| X2 = K) = P(X1=1-k|X2=k) = P(X1 = 1-k).

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