Answer:
The probability of the number of starfish dropping below 3 is 0.0463.
Step-by-step explanation:
Let X represent the number of starfish in the tide pool.
X follows a Poisson distribution with mean 6.4.
The formula for Poisson distribution is as follows.
otherwise
We need to find the probability that the number of starfish in the tide pool drops below 3.
Therefore, the required probability is:
P(X < 3) = P(X = 0) + P(X = 1) + P(X=2)
P(X < 3) = 0.00166 + 0.01063 + 0.03403
P (X < 3) = 0.0463
The value of 4 is in the 10,000 place. :)
Answer:
Perimeter = 42 units Area = 57.73 square units
Step-by-step explanation:
Perimeter of an Astroid = 6l ---> 6 x 7 = 42 units
Area of an Astroid = (3 x pi x a^2)/8 = 57.73 square units
Answer:
10.45
Step-by-step explanation:
To solve it without the calculator:
First, you multiply 4.75 times 0.2 (0.95)
Then you multiply 4.75 times 2 (9.5)
Then you add the 2 numbers to get the answer.
0.95 + 9.5 = 10.45
With the calculator, just put in the 2 numbers and click enter!