Answer:
Step-by-step explanation:
I need help too
Answer:
32 years
Step-by-step explanation:
8x12 because there are 12 inches in a foot
8x12=96
96/3
96/3=32
Answer:I think the answer is E
Step-by-step explanation:
Answer: 50,000 miles.
Step-by-step explanation:
We know that the sample mean
is the best point- estimate of the population mean
.
Given : In sample of 100 newly developed automobile tires, the average tread wear was found to be 50,000 miles and with a standard deviation of 3,500 miles.
i.e. ![\overline{x}=\text{50,000 miles}](https://tex.z-dn.net/?f=%5Coverline%7Bx%7D%3D%5Ctext%7B50%2C000%20miles%7D)
s=3,500 miles.
Then, the best estimate of the average tread life
in miles for the population of these tires is 50,000 miles.