Question
In: Statistics and Probability
IQ scores are known to be normally distributed. The mean IQ score is 100 and the...
IQ scores are known to be normally distributed. The mean IQ score is 100 and the standard deviation is 15. What percent of the population has an IQ between 85 and 105. Need to solve it through Excel
Solutions
Expert Solution
Using Excel,
=NORM.DIST(105,100,15,TRUE)-NORM.DIST(85,100,15,TRUE)
=0.4719
orchestra answered 2 years agoRelated Solutions
Stanford–Binet IQ Test scores are normally distributed with a mean score of 100 and a standard...
Stanford–Binet IQ Test scores are normally distributed with a
mean score of 100 and a standard deviation of 18. (b) Write the
equation that gives the z score corresponding to a Stanford–Binet
IQ test score. z = (x – 100 ) / 18 (c) Find the probability that a
randomly selected person has an IQ test score. (Round your answers
to 4 decimal places.) 1. P(x > 135) 2. P(x < 89) 3. P(71 <
x < 129) − =...
Stanford–Binet IQ Test scores are normally distributed with a mean score of 100 and a standard...
Stanford–Binet IQ Test scores are normally distributed with a
mean score of 100 and a standard deviation of 18. (b) Write the
equation that gives the z score corresponding to a Stanford–Binet
IQ test score. z = (x – 100 ) / 18 (c) Find the probability that a
randomly selected person has an IQ test score. (Round your answers
to 4 decimal places.) 1. P(x > 135) 2. P(x < 89) 3. P(71 <
x < 129) − =...
Stanford–Binet IQ Test scores are normally distributed with a mean score of 100 and a standard...
Stanford–Binet IQ Test scores are normally distributed with a
mean score of 100 and a standard deviation of 11. (b) Write the
equation that gives the z score corresponding to a Stanford–Binet
IQ test score. z = (x – 100 ) / 11 (c) Find the probability that a
randomly selected person has an IQ test score. (Round your answers
to 4 decimal places.) 1. P(x > 134) .001 2. P(x < 80) .0345
3. P(84 < x < 116)...
Assuming IQ scores are normally distributed in the population with a mean of 100 and a...
Assuming IQ scores are normally distributed in the population
with a mean of 100 and a standard deviation of 16, what percentages
of IQ scores are less than 120, between 110 and 130, and what IQ
will place you in the top 8% of the population?
IQ test scores are normally distributed with a mean of 100 and a standard deviation of...
IQ test scores are normally distributed with a mean of
100 and a standard deviation of 15. An individual's IQ score is
found to be 123.
A.What percentage of individuals will score above
123?
B.What percentage of individuals will score below
123?
c. What percentage of individuals will score between
123 and 100?
d. This individual was trying to be in the 80th
percentile; did they achieve this? how can you tell?
e. what can we say about someone with...
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15....
IQ scores are normally distributed with a mean of 100 and a
standard deviation of 15.
A) If one person are randomly selected, find the probability the IQ
score is greater than 112.
B)If one person are randomly selected, find the probability the IQ
score is less than 95.
C)If one person are randomly selected, find the probability the IQ
score is between 97 and 110.
D) If 16 people are randomly selected, find the probability the IQ
score will...
assume that IQ scores are normally distributed with a mean of 100 and a standard deviation...
assume that IQ scores are normally distributed with a
mean of 100 and a standard deviation of 15.
Find the probability that a randomly selected person has
an IQ score less than 115.
Find the probability that a randomly selected person has
an IQ score greater than 118.
Find the probability that a randomly selected person has
an IQ score between 88 and 112.
Assume that IQ scores are normally distributed with a mean of 100 and standard deviation of...
Assume that IQ scores are normally distributed with a mean of
100 and standard deviation of 12. Find the probability that: (a) a
randomly selected person has an IQ score less than 92. (b) a
randomly selected person has an IQ score greater than 108.
The Intelligence Quotient (IQ) test scores are normally distributed with a mean of 100 and a...
The Intelligence Quotient (IQ) test scores are normally
distributed with a mean of 100 and a standard deviation of 15.
What is the probability that a person would score 130 or more on
the test?
A..0200
B..0500
C..0228
D..0250
What is the probability that a person would score between 85 and
115?
A..6826
B..6800
C..3413
D..6587
Suppose that you enrolled in a class of 36 students, what is the
probability that the class’ average IQ exceeds 130?
A.
almost zero...
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15....
IQ scores are normally distributed with a mean of 100 and a
standard deviation of 15.
a) Find the proportion of the population that has an IQ higher
than 94
b) Find the proportion of the population that has an IQ
between 82 and 88
c) Find the IQ score that seperates the highest scoring 67%
from the rest of the population
Critical Values
Z0.05=
1.645
Z0.025=1.96
Z0.01=2.325
Z0.005=2.575
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- JAVASCRIPT: Please create an array of student names and another array of student grades. - Create...
- Topic - Construction: Structural, loads, tension 1.) Explain why pure tension members are the most efficient...
- Procter and Gamble (PG) paid an annual dividend of $ 1.62$1.62 in 2009. You expect PG...
- locate a recent case of online child pornography. Write a summary of the incident and describe...
- #Python 5. Write function called evaluate() that evaluates the following Python expressions or assignments as specified:...
- Suggest journal, research paper link reference. i need this as reference for writing a research with...
- Cryptography is used heavily in internet communications. True or false? Explain
ADVERTISEMENT