18 hope it helped!!
:) be my pleasure!
tysm
Answer:
A x
=
3
,
−
1x
=
3
,
−
1
Step-by-step explanation:
x
=
3
,
−
1
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).
Answer:
Step-by-step explanation:
To solve the area of a circle you must use the formula for example if they give use the diameter then use this formula:
<h3>A=1/4πd²</h3>