Answer:
I searched it up
Step-by-step explanation:
Answer:
2.3
Step-by-step explanation:
2.309 is less the 2.500 so you would need to round down
Answer:
It took 8 seconds for the leaf to reach the ground.
Step-by-step explanation:
The height of the leaf in feet can be found using the function:
y = -3.5*x + 28
where x is the time in seconds the leaf has been in the air.
You want to know how long it took for the blade to reach the ground. That is, the time it took for the blade to reach a height of 0 feet. So, replacing this value in the expression:
0= -3.5*x + 28
and solving you get:
-28= -3.5*x
(-28)÷ (-3.5)=x
8=x
<u><em>
It took 8 seconds for the leaf to reach the ground.</em></u>
Answer:
There is a 13.61% probability that exactly 4 of the jobs were not completed within the bid time.
Step-by-step explanation:
For each job, there are only two possible outcomes. Either they are completed on time, or they are not. This means that we use the binomial probability distribution to solve this problem.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which
is the number of different combinations of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.
Looking at a random sample of 8 jobs that it has contracted, calculate the probability that exactly 4 of the jobs were not completed within the bid time.
There are 8 jobs, so
.
30% of them are finished on time, which means that 70% are not completed within the bid time. This means that 
The problems asks for P(X = 4). So


There is a 13.61% probability that exactly 4 of the jobs were not completed within the bid time.
Answer:
as posted: 0.18182
more likely: 2.00
Step-by-step explanation:
z = (x -μ)/σ
... = (90 -76)/77 = 14/77 = 2/11
z ≈ 0.18182
_____
We know that cutting and pasting often results in numbers being unintentionally repeated, so your 77 may be intended to be 7. In that case, the z-score is
... z = (90 -76)/7 = 14/7
z = 2