Surveys have been widely used by politicians around the world as a way of monitoring the opinions of the electorate. six months ago, a survey was undertaken to determine the degree of support for a national party leader. of a sample of 1,100, 56% indicated that they would vote for this politician. this month, another survey of 800 voters revealed that 46% now support the leader.

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

two data sets with the same median will not have the same varaibility

step-by-step explanation: