Answer:
5 13/24
Step-by-step explanation:
Answer:
8 dollars
Step-by-step explanation:
Define the variable X as:
X = Original Price of the Socks, in units dollars
Then,
(X + 24)(100% - 25%) = 24
(X + 24)(0.75) = 24
X = (24/0.75) - 24 = 8 dollars.
21*x=9*21
9*21=189
21*x=189
Divide 189 by 21 to solve for X or in this case "Blank"
189/21= 9
Answer:
Sample number 3
Step-by-step explanation:
From the given information:
Sample Service life(hours) Total Mean(X)
1 2 3 4
1 495 500 505 500 2000 500
2 525 515 505 515 2060 515
3 470 480 460 470 1880 470
Total =
Mean =
Thus;
To plot on an X_Bar chart, we have:
Sample Mean (X) UCL LCL
1 500 520 480
5 515 520 480
6 470 520 480
The x-Bar chart is shown in the image attached below. From the image, we realize that the average service life for sample number 3 occurs to be out of the statistical control.