Answer:
![L_x=5.3 inches](https://tex.z-dn.net/?f=L_x%3D5.3%20inches)
Step-by-step explanation:
Average length ![\=x =5.3 inches](https://tex.z-dn.net/?f=%5C%3Dx%20%3D5.3%20inches)
Standard deviation ![\sigma=0.2 inches](https://tex.z-dn.net/?f=%5Csigma%3D0.2%20inches)
Sample size ![n=50](https://tex.z-dn.net/?f=n%3D50)
Generally The point estimate for the mean length of all bolts in inventory is
![L_x= \=x](https://tex.z-dn.net/?f=L_x%3D%20%5C%3Dx)
![L_x=5.3 inches](https://tex.z-dn.net/?f=L_x%3D5.3%20inches)
2a-8a=12-8a
now add 8a to both side and you get
2a= 12
divide both sides by 2 and you get
a=6
Answer:
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