Suppose we are testing people to see if the rate of use of seat belts has changed from a previous value of 88%. suppose that in our random sample of 500 people, we see that 450 have the seat belt fastened. (a) about how many of 500 would we expect to be using their seat belts if the proportion who use seat belts is unchanged?
(b) we observe 450 people out of a random sample of 500 using their seatbelt. the p-value is 0.167. explain the meaning of the p-value.

is means division by fractions

step-by-step explanation:

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

y=3x+4

step-by-step explanation:

given the points a(0,4) and b(-4, -8)

eqn of line ab: (y-4)/(x-0)=(-8-4)/(-4-0)

(y-4)/x=-12/-4=3

y=3x+4

8

step-by-step explanation: