Answer:
There are not 15 failures and 15 successes. A confidence interval can be computed by adding 2 failures and 2 successes .
Step-by-step explanation:
Given that
Survey asked by 40 people
6 said that they were very concerned.
So the following statements correctly describe the above problem
The correct statement is , There are not 15 failures and 15 successes. A confidence interval can be computed by adding 2 failures and 2 successes .
Answer:
the cylinder volume is greater
Step-by-step explanation:
The volume of a cube with x=1 is ...
V(1) = 1^3 = 1
The graph shows y ≈ 1.5 for x=1. Since 1.5 > 1, the volume of the cylinder is greater.
Answer:
3.85 hours
Step-by-step explanation:
We have that the model equation in this case would be of the following type, being "and" the concentration of bacteria:
y = a * e ^ (b * t)
where a and b are constants and t is time.
We know that when the time is 0, we know that there are 100,000 bacteria, therefore:
100000 = a * e ^ (b * 0)
100000 = a * 1
a = 100000
they tell us that when the time is 2 hours, the amount doubles, that is:
200000 = a * e ^ (b * 2)
already knowing that a equals 100,000
e ^ (b * 2) = 2
b * 2 = ln 2
b = (ln 2) / 2
b = 0.3465
Having the value of the constants, we will calculate the value of the time when there are 380000, that is:
380000 = 100000 * (e ^ 0.3465 * t)
3.8 = e ^ 0.3465 * t
ln 3.8 = 0.3465 * t
t = 1.335 / 0.3465
t = 3.85
That is to say that in order to reach this concentration 3.85 hours must pass
Answer:
a. p(x<= 5) = .15 + .4 + .25 = .8
C. .4(4.2) = 1.68
5.4(1-.4) = 3.24
3.24 + 1.68 = 4.92 ,, 4.92 > 4.55 so short is better
Step-by-step explanation:
Hello!
We must use a certain formula to find the circumference of anything circular.
The formula is:
C = 2 × pi × r
We know that pi = 3.14 approximately and the radius is 3 feet.
Substitute:
C = 2 × 3.14 × 3
C = 6.28 × 3
C = 18.84 ft
ANSWER:
The circumference of the circular rug is 18.84 ft. (Last option)
