The following data represent the responses (Y for yes and N for no) from a sample of 20 college students to the question "Do you currently own shares in any stocks?"
Y Y Y Y Y Y Y N N N
Y Y N Y Y N Y N Y NO
a. Determine the sample proportion, p, of college students who own shares of stock
b. If the population proportion is 0.30, determine the standard error of the proportion.
a. p=
(Type an integer or a decimal.)
b. 0,=
(Round to four decimal places as needed.)

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

there is no graph so i cant sorry

step-by-step explanation:

the height of the surface increases from the center out to the sides of the road

it is c!

the answer for this is 0.25 km. : )