In decimal form it's 0.39. So, 0.39 is your answer. Hope this helped
Answer:
He should word his statement as "Free replacement for tires that wear before 30875 miles."
Step-by-step explanation:
If he is willing to replace 10% of tires he should find the life of tires that gives an area of 10% in the normal distribution graph.
Now for 10% of area standard normal deviate Z can be obtained from normal distribution table
Using normal distribution table for 10% area we have Z = -1.28
Thus we have ![Z=\frac{X-\overline{X}}{\sigma }\\\\\therefore X=\sigma Z+\overline{X}](https://tex.z-dn.net/?f=Z%3D%5Cfrac%7BX-%5Coverline%7BX%7D%7D%7B%5Csigma%20%7D%5C%5C%5C%5C%5Ctherefore%20X%3D%5Csigma%20Z%2B%5Coverline%7BX%7D)
Applying given values we get
![X=-1.28\times 2500+34000\\\\X=30875miles](https://tex.z-dn.net/?f=X%3D-1.28%5Ctimes%202500%2B34000%5C%5C%5C%5CX%3D30875miles)
Answer:
68 un²
Step-by-step explanation:
It's 44cm
because the 13 on the bottom is the same length at the top even though they are at different lengths of each other. Same goes for the 9 on both sides.
So 9+9+13+13=44