Answer: The probability that a randomly selected tire will have a tread-life of less than 65,000 miles is 0.7872 .
Step-by-step explanation:
The cumulative distribution function for exponential distribution is :-
, where
is the mean of the distribution.
As per given , we have
Average tread-life of a certain brand of tire : 
Now , the probability that a randomly selected tire will have a tread-life of less than 65,000 miles will be :

Hence , the probability that a randomly selected tire will have a tread-life of less than 65,000 miles is 0.7872 .
Answer:
17
Step-by-step explanation:
a1=2a7 because the square route of (Tan) is 49 so it 2a7tan49 fa10 the answer is b
Answer:
Step-by-step explanation:
first you multiply 45 by .40 you multiply by .40 because that is the percent increase.
45*.40=18
then you just add the 18 to 45 which get you 63.
answer:40%
Answer:
P = 1/3
P = 0.333
Step-by-step explanation:
There are 6 marbles in the pack, two of them are yellow.

Hope this helps
10 and 2/3 = 32/3
32/3 x 8 = 256/3
256/3 = 85.33333333333 repeating