In a certain region, 25% of people over age 50 didn't graduate from high school. We would like to know if this percentage is the same among the 25-30 year age group (a) How many 25-30 year old people should be surveyed in order to estimate the proportion of non-grads to hin 4%, with 8%, confidence?
(b) Suppose we wanted to cut the margin of error to 3%. How many people should be sampled now?
(c) what sample size is required for a margin of error of 8%?

q1 a person or thing situated away or detached from the main body or system. a cluster is a a mash of many things.

q2 do

step-by-step explanation:

answer: sherk

step-by-step explanation:

just give up and watch the best anime ever sherk

the answer would be d.

step-by-step explanation:

move all variables to the left side and all constants to the right side

(x−3)^2+(y−1)^2=16

this is the form of a circle. use this form to determine the center and radius of the circle.

( x − h ) 2 + ( y − k ) 2 = r 2

match the values in this circle to those of the standard form. the variable   r   represents the radius of the circle,   h   represents the x-offset from the origin, and   k   represents the y-offset from origin.

r = 4

h = 3

k = 1

the center of the circle is found at   ( h , k ) .

center:   ( 3 , 1 )

these values represent the important values for graphing and analyzing a circle.

center:   ( 3 , 1 ).

radius:   4