It is the bottom right corner choice
the answer is d.
10100-1100 is 9,000.
12 months× 4 years= 48 months
9,000÷48= 187.5
Answer:
Where
and
We select a sample of n=16 and we are interested on the distribution of
, since the distribution for X is normal then we can conclude that the distribution for
is also normal and given by:

Because by definition:



And for this case we have this:


Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the IQ scores of a population, and for this case we know the distribution for X is given by:
Where
and
We select a sample of n=16 and we are interested on the distribution of
, since the distribution for X is normal then we can conclude that the distribution for
is also normal and given by:

Because by definition:



And for this case we have this:


Answer:
Volume of the sphere up to two decimal places=
cubic yards
Surface area of the sphere up to two decimal places
square yards
Step-by-step explanation:
Given:
The radius of the sphere= 1 yard
Volume of a Sphere:
:

cubic yards
Volume of the sphere up to two decimal places=
cubic yards
Surface area of the sphere= 

Surface area of the sphere up to two decimal places
square yards