Using the graph determine the equation of the axis of symmetry
1 answer:
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8/9 divided by 3 = 8/27
have a wonderful day! the steps are down below! :)
have a wonderful day! the steps are down below! :)
#4
- -2/8=-1/4
- 3/6=1/2
Refer to the attachment
#2
Mid point:-
- -2/5+1/2/2
- -4+5/10/2
- 1/10/2
- 1/20
The 85th percentile is the cutoff time 
such that
In other words, the 85th percentile refers to the time needed to belong to the top 15% of the distribution; more generally, the
percentile is the top 
of the distribution.
Anyway, to find this value of, transform 
to a random variable 
with the standard normal distribution using
where
is the mean of and 
is the standard deviation of .
Here
is used to denote the z-score corresponding to the cutoff time . Referring to a z-score table, you find that this occurs for 
. So,
In other words, the 85th percentile refers to the time needed to belong to the top 15% of the distribution; more generally, the
Anyway, to find this value of
where
Here