Which statement about population parameters and point estimates is false? A. sis the sample standard deviation. It is the square root of the
variance.
B. p is the sample mean. It is used to estimate the population mean.
C. n is the sample size. It is used to calculate the sample mean.
D. o is the population standard deviation. It is usually unknown.

false

step-by-step explanation:

answer: ♡♡♡♡♡♡♡♡♡♡

step-by-step explanation:

hence, the required result is

step-by-step explanation:

suppose we have two matrices a and b

we will assume the two matrices

we have to compute b-a which means subtracting corresponding elements of a from b.

-

answer: (-8,4) are the coordinates of a

step-by-step explanation:

let the side of square abcd is x .

thus the area of square abcd is .

now, by the diagram area of triangle ead= 1/2 × ea × ad = 1/2 × ea × x

( because ad is the side of square)

and, according to the question,

the areas of square abcd and right ead are equal.

⇒

⇒ea=2x

thus, ea: ab=2: 1

therefore, point a divides line segment eb into the ratio 2: 1.

⇒ by sectional formula coordinates of a are,

=

=

=(-8, 4)

thus the coordinates of a are (-8,4)