A random sample size of 450 is drawn from a large population. The population standard deviation is 1.6. The sample mean is 27.9. Estimate the size of the population mean, including margin of error.

The size of the population mean would be provided as:

mean +/- std/sqrt(sample size)

<=>

27.9 +/- 1.6/sqrt(450)

<=>

27.9 +/- 0.75

=> Option A is correct.

Hope this helps!

:)

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

source:

the one that has a slope of 1/2 and is positive.

step-by-step explanation: 2 buckets 1 trip ; 4 buckets 2 trips and so on.