Answer: C) 0.8664.
Step-by-step explanation:
Given, The tread life of tires mounted on light-duty trucks follows the normal probability distribution with
.
Let
be the sample mean tire life of any 4 tires.
Now , the probability that the mean tire life of these four tires is between 57,000 and 63,000 miles will be :-

For Very likely , the probability should lie between 0.95 and 1.
Hence, the correct answer is C) 0.8664.
4 3/4+2 5/6
=19/4+25/6
=19/4+17/6
=91/12
=7 7/12
Bro same I don't know how to do this maybe cause I don't even care anymore but its OK I hope you got the answer already
The first one is incorrect
Answer:
.
Step-by-step explanation:
The given equation is

Using distributive property, we get



Isolate variable terms.


Divide both sides by -0.35.



Therefore,
.