If a random variable has a standard deviation of σ and a sample of size n is collected for the variable, then the mean has a standard error given by σ/√n. So the standard error of the mean is calculated using the two quantities: standard deviation σ and the sample size n.
Answer:
The answer is 4 and 3/4 or 4.75.
Step-by-step explanation:
1/2 + 1/2 is equal to 1
1/4 is the same thing as 2/8 so we have four eights
3/8 is six eights since we have two on the number line
5/8 x 3 is about 1.875
7/8 is just 7/8 because there is only 1 on the number line.
add all of these fractions together and you will end up with about 4 and 3/4
It is y=2x+2. The slope is 2 and the y intercept is 2
Answer:
dunno
Step-by-step explanation:
Answer:
PY = 14.5
Step-by-step explanation:
The diagonals of a rectangle are congruent and bisect each other, thus
XZ = WY , that is
4x - 1 = x + 7 + x + 7
4x - 1 = 2x + 14 ( subtract 2x from both sides )
2x - 1 = 14 ( add 1 to both sides )
2x = 15 ( divide both sides by 2 )
x = 7.5
Thus
PY = x + t = 7.5 + 7 = 14.5