For a school newspaper article, cienna conducted a survey to find out students’ favorite subjects. she polled all the students in mrs. lopez’s advanced dance class. why is her data likely to be skewed?
a-honors dance students are more likely to enjoy dance than students in the general population, so dance may be overrepresented.
b-cienna should have interviewed all the students in the school to get more accurate data.
c-honors dance students are more likely to enjoy dance than students in the general population, so dance will be underrepresented.
d-cienna should have interviewed only every other student in the class to avoid having too many people.

The correct answer is B-Cienna should have interviewed all the students in the school to get more accurate data.

Step-by-step explanation:

The reason is that we attempt to avoid bias of students. We cannot be sure if advanced students would like dance more or less. They may like it more since they signed up for an advanced dance class, but they may also like it less because it is hard.

However, samples should have either a complete set of data or a random sampling.

B-Cienna should have interviewed all the students in the school to get more accurate data.

Step-by-step explanation:

THERE'S NOTHING REALLY MUCH TO EXPLAIN

HOPE THIS IS THE RIGHT ANSWER AND GOOD LUCK!!

answer: ratio of volume of cone (with 3 times the height and equal diameter) to volume of cylinder is 2 to 1. the value of π is not used.

step-by-step explanation:

radius is diameter/2 = 4.

area of circle is π r^2.

volume of cylinder is height × area of base = hπr^2 = 3(4^2) π = 48π cubic inches.

not knowing the formula for volume of cone, i calculate it using calculus (which is for calculating things).

volume of cone is integral 0 to h area(y) dy. area(y) is π r(y)^2. r(y) runs r to zero as y runs zero to h, r(0) = r, r(h) = 0.

r(y) = r - r/h y

area(y) = π (r - r/h y)^2 = π (r^2 - 2r^2y/h + r^2y^2/h^2) = π r^2(1-2y/h+y^2/h^2)

antiderivative area(y) = π r^2 (y-y^2/h+y^3/(3h^2))

integral 0 to h = π r^2(h-h^2/h+h^3/(3h^2) - (0)) = π r^2(h - h + h/3) = π r^2(h/3) = π/3 r^2 h

volume of this cone is π/3(4^2)18 cubic inches.

= 6 16 π = 96π cubic inches.

cone has twice the volume, 96/48.

cone height is 6 times the cylinder.

ratio of volume formula: π r^2 cancels.

cone over cylinder ratio is 6h/3 to h, 2 to 1.