Under a normal distribution curve, if 70% of the people fall to the right of the observation point, then 30% of the people would fall to the left of the observation point. Note, the observation point is the number we are looking for in this instance(how long it takes to find a parking space).
We'll need to use a z table and the formula for a z score to find what we are looking for. First, convert 30% to 0.30 and refer to a standard z table that represents the area under a normal curve to the left of specific z scores. We'll need to look in the body of the table and find the closest decimal value compared to our 0.30. Once you find this decimal number, reference the row and column values to obtain the z score. Looks like this will be -0.53.
Now we can use the z score formula to find our observation point:
z score = (x - Mean)/standard deviation, where x represents the observation point we're looking for!
Substituting into the formula we have:
Solving this equation for x, we find x = 2.94
This represents our observation point and we can assume that 70% of people take more than 2.94 minutes to find a parking space.
Answer:
3768 mm ^ 3
Step-by-step explanation:
We have that the volume of a cone is given by:
V = 1/3 * Ac * h
Where Ac is the area of the circle, we know that the radius is half the diameter then:
r = d / 2
r = 12/2
r = 6
And Ac is equal to:
Ac = pi * r ^ 2
replacing:
Ac = 3.14 * 6 ^ 2
Ac = 113.04
113.04 mm ^ 2 is the area of the circle, replacing the volume form knowing that h = 100
V = 1/3 * 113.04 * 100
V = 3768
Therefore they fit a total of 3768 mm ^ 3
Answer:
-23/3
Step-by-step explanation:
sorry if i am wrong
7x=y, because you first multiply y by 7 so you then have to do the same to x, so that gives you 7x=y
The best approximation for the circumference of the plate is 44 inches. Then the correct option is B.
<h3>What is a circle?</h3>
It is a locus of a point drawn at an equidistant from the center. The distance from the center to the circumference is called the radius of the circle.
A plate has a diameter of 14 inches.
The best approximation for the circumference of the plate will be
The best approximation for the circumference of the plate is 44 inches. Then the correct option is B.
More about the circle link is given below.
brainly.com/question/11833983