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Mademuasel [1]
3 years ago
9

Weather records show that the probability of rainfall in Florida in June is 0.86. What is the probability that it rains there in

June at least 9 times in a decade?
Mathematics
2 answers:
Cerrena [4.2K]3 years ago
8 0

Answer:ifyou are using plato the correct answer is C. or 0.58


Step-by-step explanation:


Lubov Fominskaja [6]3 years ago
5 0
R - it is rain  (probablity: 0.86)
N - it is not rain (probablity: 1-0.86 = 0.14)
You've got these cases:

R R R R R R R R R N
R R R R R R R R N R
R R R R R R R N R R 
. . . 
N R R R R R R R R R     -  it is 10 cases.  Probablity each case is
(0.86)^9 * 0.14 - it is approximately  0.036   (9R and 1N - you multiply everything)

It is 10 cases so you have to multiply by 10  and you get 0.36

There is also eleventh case:

R R R R R R R R R R 

Probablity is (0.86)^10 approximately 0.22

Add these cases and you'll get your probablity:  0.36 + 0.22 = 0.58 
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