Question

Suppose the distribution of IQ scores of adults is normal with a mean of 100 and a standard deviation of 15. Find IQ score that separates the top 32 percent of adult IQ scores from the bottom 68 percent. Round your answer to the nearest integer. The IQ score that separates the top 32 percent of adult IQ scores from the bottom 68 percent is [IQValue].

Answer #1

Given that, mean (μ) = 100 and standard deviation = 15

We want to find, the value of x such that, P(X > x) = 0.32

Therefore, the IQ score that separates the top 32 percent of
adult IQ scores from the bottom 68 percent is
**107.05**

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)...

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...

Suppose the scores on an IQ test approximately follow a normal
distribution with mean 100 and standard deviation 12. Use the
68-95-99.7 Rule to determine approximately what percentage of the
population will score between 100 and 124.

Assume that adults have IQ scores that are normally distributed
with a mean of 100 and a standard deviation of 15. For a randomly
selected adult, find the probability. Round scores to nearest whole
number.
1.) Prob. of IQ less than 85
2.)Prob. of IQ greater than 70
3.) Prob. of randomly selected adult having IQ between 90 and
110.

Adults have a IQ scores that are normally distributed with a
mean of a 100 and a standard deviation of 15.
a) what percentage of scores are less than 103?
b) what percentage of scores are between 60 and 130?
c) what is the IQ score seperating the bottom 25% from the
rest?
thank you.

Assume that adults have IQ scores that are normally distributed
with a mean 105 and standard deviation of 20. a. Find the
probability that a randomly selected adult has an IQ less than 120.
b. Find P90 , which is the IQ score separating the bottom 90% from
the top 10%. show work

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%

1) Find the area of the shaded region. The graph to the right
depicts IQ scores of adults, and those scores are normally
distributed with a mean of 100 and a standard deviation of 15.
x=90
The area of the shaded region is __. (Round to four decimal
places as needed.)
2) Find the area of the shaded region. The graph to the right
depicts IQ scores of adults, and those scores are normally
distributed with a mean of 100...

1. Assume that adults have IQ scores that are normally
distributed with a mean of 104.3 and a standard deviation of 23.8.
Find the probability that a randomly selected adult has an IQ
greater than 147.0. The probability that a randomly selected adult
from this group has an IQ greater than 147.0 is..
2. Engineers want to design seats in commercial aircraft so that
they are wide enough to fit 90% of all males. (Accommodating 100%
of males would require...

Assume that adults have IQ scores that are normally distributed
with a mean of 100.5 and a standard deviation 20.5. 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
nothing. (Type an integer or decimal rounded to one decimal place
as needed.)

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 22 minutes ago

asked 22 minutes ago

asked 38 minutes ago

asked 45 minutes ago

asked 57 minutes ago

asked 57 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago