Answer:
i belive the answer is the option c
Answer:
I'm pretty sure the answer is D
Answer:
The probability that all will last at least 30,000 miles is 0.3164.
Step-by-step explanation:
Consider the provided information.
For a particular tire brand, the probability of wearing out before 30,000 miles is 0.25. Someone who buys a set of four of these tires,
That means the probability of not wearing out is 1-0.25 = 0.75
Now use the binomial distribution formula.

Substitute p = 0.25, q=0.75, r=4 and n=4



The probability that all will last at least 30,000 miles is 0.3164.
9514 1404 393
Answer:
No
Step-by-step explanation:
Put the value where the variable is and see if you get a true statement.
2(-4) -8 = -15
-8 -8 = -15 . . . . . . . false
-4 is <em>not a solution</em> to the equation