Question

IQ test scores are normally distributed with a mean of 100 and a standard deviation of 15.

a) Find the IQ scores that represent the bottom 35%

. b) Find the IQ score that represents the 3rd Quartile

c) Find the IQ score for the top 5%

Answer #1

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A) Assume that adults have IQ scores that are normally
distributed with a mean of 100 and a standard deviation of 15. Find
the probability that a randomly selected adult has an IQ between 90
and 120. (Provide graphing calculator sequence)
B) Assume that adults have IQ scores that are normally
distributed with a mean of 100 and a standard of 15. Find P3D,
which is the IQ score separating the bottom 30% from the top 70%.
(Provide graphing calculator...

IQ
scores are normally distributed with a mean of 100 and standard
deviation 15. what is the IQ score for an area of 0.9918

Assume that adults have IQ scores that are normally distributed
with a mean of 100.6 and a standard deviation 20.7 Find the first
quartile Upper Q1 which is the IQ score separating the bottom 25%
from the top 75%. (Hint: Draw a graph.) The first quartile is?
Second quartile is?

Assume that adults have IQ scores that
are normally distributed with a mean of 100 and a standard
deviation of 15. Find the probability that a randomly selected
adult has an IQ between 115 and 130.
(a)
.6700 (b)
.1359 (c)
.9082 (d)
.1596 (e) .1628
5 Refer to question 4
above. Find the IQ score at Q1 or the 25th percentile.
This is the score which separates the bottom 25% from the top
75%.
(a)
89.95 (b)...

Assume that adults have IQ scores that are normally distributed
with a mean of 96.3 and a standard deviation 23.1 Find the first
quartile , which is the IQ score separating the bottom 25% from
the top 75%. (Hint: Draw a graph.)

Assume that adults have IQ scores that are normally distributed
with a mean of 101 and a standard deviation 24. Find the first
quartile Upper Q 1, which is the IQ score separating the bottom
25% from the top 75%.

Assume that adults have IQ scores that are normally distributed
with a mean of 101.2 and a standard deviation 23.6 Find the first
quartile Upper Q 1Q1, which is the IQ score separating the bottom
25% from the top 75%. (Hint: Draw a graph.) The first quartile
is

Assume that adults have IQ scores that are normally distributed
with a mean of
102.7
and a standard deviation
20.9
Find the first quartile
Upper Q 1
which is the IQ score separating the bottom 25% from the top
75%. (Hint: Draw a graph.)
The first quartile is?

Assume that adults have IQ scores that are normally distributed
with a mean of 103.9 and a standard deviation 24.9. Find the first
quartile Upper Q 1, which is the IQ score separating the bottom
25% from the top 75%. (Hint: Draw a graph.) The first
quartile

Assume that adults have IQ scores that are normally distributed
with a mean of 102.5 and a standard deviation 15.7. Find the first
quartile Upper Q 1, which is the IQ score separating the bottom
25% from the top 75%. (Hint: Draw a graph.)
The first quartile is

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