Answer:
(8.213 ; 8.247)
Step-by-step explanation:
Given the data :
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Dia. 8.23 8.16 8.23 8.25 8.26 8.23 8.20 8.26 8.19 8.23 8.20 8.28 8.24 8.25 8.24
Sanple size, n = 15
Sample mean, xbar = Σx / n = 123.45 / 15 = 8.23
The sample standard deviation, s = √(x -xbar)²/n-1
Using calculator :
Sample standard deviation, s = 0.03116
s = 0.031 (3 decimal places)
The 95% confidence interval :
C.I = xbar ± (Tcritical * s/√n)
Tcritical at 95%, df = 15 - 1 = 14
Tcritical = 2.145
C.I = 8.23 ± (2.145 * 0.031/√15)
C.I = 8.23 ± 0.0171689
C.I = (8.213 ; 8.247)
Answer:
3.6
Step-by-step explanation:
30%×12= 3.6
30%=0.3
So, for each one you are trying to complete a full rotation or 360°. This means that you should add up all of the numbers and subtract that from 360.
#1. 360-279=81°
#2. 360-281=79°
The answer is
<span>f(x)=-6x-4
</span>f(4)=-6(4)-4
f(4)=-24-4
f(4)= -28
Answer = (d) -28
No, just keep factoring until you cannot factor any further.
example:
90
.^
9*10
^....^
3*3*2*5
I could also start with 15*6, 3*30 or whatever. but the final answer will still be
2*3*3*5 = 2*3^2*5.