A is a numerical characteristic of a sample and a is a numerical characteristic of a population. Group of answer choices variable, distribution distribution, variable parameter, statistic . statistic, parameter

A statistic is a numerical characteristic of a sample and a parameter is a numerical characteristic of a population

Step-by-step explanation:

The numerical characteristic of a sample can be a sample mean, which is known as a statistic for that sample. Similarly, the numerical characteristic for a population can be the population mean, which is known as a parameter. Using statistics, we make a guess about a parameter of the whole population based on the statistic of a given sample.

Hence, the correct choice to fill in the blanks is statistic, parameter.

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

ab will be equal to