Answer:
d. The variance is 9.56 and the standard deviation is 3.09.
Step-by-step explanation:
From the above question, we are given the following data set.
3, 7, 8, 8, 8, 9, 10, 10, 13, 14
a) Mean = 3 + 7 + 8 + 8 + 8 + 9 + 10 + 10 + 13 + 14/ 10
= 90/10
= 9
b) Variance
The formula for sample Variance = (Mean - x)²/ n - 1
Mean = 9
n = 10
Sample Variance =
(3 - 9)² + (7 - 9)² + (8 - 9)² + (8 - 9)² + (8 - 9)² + (9 - 9)² + (10 - 9)² + (10 - 9)² + (13 - 9)² + (14 - 9)² / 10 - 1
= 36 + 4 + 1 + 1 + 1 + 0 + 1 + 1 + 16 + 25/9
= 86/9
= 9.555555556
≈ Approximately 9.56
Variance = 9.56
Sample Standard deviation = √Sample Variance
= √9.56
= 3.0919249667
≈ Approximately 3.09
$<span>1,241 is my answer. I used a calculator for interest, so I'm sure this is the correct answer. Rounding it to the nearest hundredth I suppose it would be $1,200. I'm not good at rounding, but I hope this has helped you some.</span>
Answer:
Point Form:
(
5
,
2)
Equation Form:
x
=
5
,
y
=
2
Step-by-step explanation:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Answer:
Your spelled formula wrong
Given the volume of a cylinder V = pi(r2)h we simply plug in the numbers
The radius is half the diameter so r = 4cm
the height h is given as 12 cm
V = 3(42)(12) = 3(16)(12) = 576 cm3
Note: Generally we would use 3.14 as the rounded value of p
Right on top of 'a'. They'll look like one single point on the number line.