NOTE: This problem has many steps. You are asked to enter
intermediate values in the process. These answers will require a
fixed number of decimal points. However, you MUST ALWAYS REMEMBER
that you are not using the rounded numbers in your future
calculations. The only exception to this is that you may use
z-scores rounded to three decimal places (of course, you
also may use the unrounded version as well).
In a certain school district in a large metropolitan area, the SAT
scores over that past five years are normally distributed with a
mean of 1461. Furthermore, Q3Q3 is 1672.
For a normal distribution, what is the z-score for the
75-th percentile?
z =
(Enter answer rounded to three decimal places.)
Using this information, what is the standard deviation of this
population of SAT scores?
sigma =
(Enter answer rounded to the nearest whole number.)
For a normal distribution, what is the z-score for the
95-th percentile?
z =
(Enter answer rounded to three decimal places.)
Now, use all of the information to determine what the P95P95 score
is for this population?
P95=P95=
(Enter answer rounded to the nearest whole number.)
LicensePoints possible: 1
This is attempt 1 of 3.
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