Cory is a bird watcher he estimates that 30% of the birds he sees are american robins, 20% are dark eyed juncos and 20% are slnc
sparrows. he designs a simulation.
2 answers:
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<h3>Answer: B) 2.9 approximately</h3>
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Explanation:
The weird or fancy looking E symbol is the greek uppercase letter sigma. It is effectively the english version of S to represent summation. So we add up all the terms to get this. Luckily this has already been done for us in the table where they wrote "sum = 34", so
From here, we substitute this into the formula, along with n = 5 since there are 5 items in the original list
So,
This computes the sample standard deviation. To get the population standard deviation, you'd basically change the "n-1" to simply "n", and the rest of the formula is identical.
Probability helps us to know the chances of an event occurring. The probability of Linda's dart hitting the circle is 0.7857.
<h3>What is Probability?</h3>The probability helps us to know the chances of an event occurring.
As it is given that the circle touches the sides of the square. therefore, the length of the side of the square is the diameter of the circle.
Now, in order to calculate the probability that the dart hits a point in the circle we need to calculate the area of the circle and the area of the square.
Area of the circle with a given radius of 9 units,
Area of the square with sides equal to the diameter of the circle,
Now, the probability that the dart hits a point in the circle can be written as,
Hence, the probability of Linda's dart hitting the circle is 0.7857.
Learn more about Probability: