Answer:
x=0
y=0
is all nonzero real numbers
is all nonzero real numbers
Step-by-step explanation:
I hope this helps you
8n=7n+1/2
2.8n=7n+1
16n-7n =1
9n=1
n=1/9
For number 2 problem:
10x=5y
15x=7.5y
20x=10y
For problem3:
3x=1.5y
4x=2y
5x=2.5y
Answer:
_
z=96x
(line on top of the nine)
Step-by-step explanation:
Answer:
B. N(μ, 1.30).
Step-by-step explanation:
The Central Limit Theorem estabilishes that, for a random variable X, with mean
and standard deviation
, a large sample size can be approximated to a normal distribution with mean
and standard deviation
.
In this problem, we have that:
An SRS of 25 recent birth records at the local hospital was selected. In the sample, the average birth weight was = 119.6 ounces. Suppose the standard deviation is known to be σ = 6.5 ounces.
Assume that in the population of all babies born in this hospital, the birth weights follow a Normal distribution, with mean μ.
This means that for the sampling distribution, the mean is the mean of the weight of all babies born, so
and
.
So the correct answer is
B. N(μ, 1.30).