Answer:
Degrees of freedom
Step-by-step explanation:
Df denotes or means the Degrees of Freedom.
From the given question therefore, To solve the value of Df,
Value of Df = n - 1
That is 32 - 1 = 31.
Hence Degrees of Freedom or
Df = 31.
Answer : 0.0129
Step-by-step explanation:
Given : Based on FAA estimates the average age of the fleets of the 10 largest U.S. commercial passenger carriers is years and standard deviation is years.
Sample size :
Let X be the random variable that represents the age of fleets.
We assume that the ages of the fleets of the 10 largest U.S. commercial passenger carriers are normally distributed.
For z-score,
For x=14
By using the standard normal distribution table , the probability that the average age of these 40 airplanes is at least 14 years old will be :-
Hence, the required probability = 0.0129
The answer will be 8
Force=mass x acceleration
56= mass x 7
Mass= 56/7 = 8
Answer:
we need more information or its impossible
but the with the given info I would say y+6=x
Step-by-step explanation:
so 4+6=10 and 1+6=7 and 7+6=13 and 9+6=15
it can also be y×2.5=x
so 4×2.5=10 and etc
$3,611=$4,000
So $4,000 divided by 6 is 666