Answer:
308.13/15=20.553 or 21
Step-by-step explanation:
hope this helps
plz mark brailiest
Answer:
The standard deviation of the number of haunted houses in a large city is 3.
Step-by-step explanation:
In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:
In which
x is the number of sucesses
e = 2.71828 is the Euler number
is the mean in the given interval, which is the same as the variance.
According to ghost hunters, large cities have, on average, 9 haunted houses each.
This means that
a) What is the standard deviation of the number of haunted houses in a large city?
Square root of the variance, so:
The standard deviation of the number of haunted houses in a large city is 3.
Answer:
Step-by-step explanation:
the answer is you a funny guy
Spruce tail because if you round it from the number 8 it will turn the 4 into a 5 turning it into 10.5, which is what you need
Draw a perpendicular from the center of the
circle to the midpoint of a side of the triangle.
Now draw a line from the center to the vertex
of that side. You now have a right triangle with
a base angle of 30º, side adjacent to that angle
of 3, and hypotenuse = r, the radius of circle. So,
cos 30º = 3/r, r = 3.46, the diameter
is twice that, 6.92 round to 6.9