Plsss help!! Will give brainliest to the person with most explanation and best answer! 30 POINTS!
2 answers:
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Answer:
The probability is
Step-by-step explanation:
We know that the ratio of grey color morph to red color morph is
This can be written in terms of probability as :
This means that the probability of obtain a red color morph snake in a random sample of 100 snakes is (If I only randomly select one snake).
Now, the number of red color morph snakes in a random sample ''n'' can be modeled as a binomial random variable. Where ''p'' is the success probability (In our case, the probability from obtain one red color morph snake out of 100 snakes) ⇒
''Number of red color morph snakes in the sample''
In our case,
⇒ ~ Bi (n,p) ⇒
~ Bi (30,0.47)
The probability function for is :
Where is the combinatorial number define as
⇒
We need to calculate the probability of
This probability is equal to :
For example,
We need to calculate all the terms of the sum and then calculate
If we use any statistical program we will find that
The point R has coordinates (-5,-5) and the image point R' has coordinates (2,-7).
If
- -5+a=2, then a=2-(-5)=2+5=7;
- -5+b=-7, then b=-7-(-5)=-7+5=-2.
Thus, the translation rule is
(x,y)→(x+7,y-2)
or
If point U has coordinates (-5,1), then its image U' has coordinates (-5+7,1-2) that is (2,-1).
Answer: correct choice is B