Question
In: Statistics and Probability
The measure of intelligence, IQ, of a group of people is assumed to be approximately normally...
The measure of intelligence, IQ, of a group of people is assumed to be approximately normally distributed with mean 102 and standard deviation 14.
(a) We now select a person randomly from the group. Let x be the selected person's IQ. Find the probability that the selected person's IQ is at least 95 and less than 116.
(b) If we are told that Tom's IQ, denoted by Xt, is at the 98th percentile of the IQ distribution of the group of people. Find Xt.
Solutions
orchestra answered 2 years agoRelated Solutions
Part 1. The distribution of IQ (Intelligence Quotient) is approximately normal in shape with a mean...
Part 1. The distribution of IQ (Intelligence Quotient) is
approximately normal in shape with a mean of 100 and a standard
deviation of 17.
According to the standard deviation rule, only
% of people have an IQ over 117.
Part 2.
The distribution of IQ (Intelligence Quotient) is approximately
normal in shape with a mean of 100 and a standard deviation of
15.
According to the standard deviation rule, % of people
have an IQ between 70 and 130.
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...
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 score would be
grater than 140?
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 between 85 and
115?
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. Given a class with 12 students, what is the
probability that the class' average IQ score is less than
115?
IQ scores (as measured by the Stanford-Binet intelligence test) are normally distributed with a mean of...
IQ scores (as measured by the Stanford-Binet intelligence test)
are normally distributed with a mean of 95 and a standard deviation
of 14. Find the approximate number of people in the United States
(assuming a total population of 280,000,000) with an IQ higher than
126. (Round your answer to the nearest hundred thousand.) How many
People?
Also please explain thoroughly and where the 0.5 and the other
decimal number come from. Thanks in advance!
IQ scores (as measured by the Stanford-Binet intelligence test) are normally distributed with a mean of...
IQ scores (as measured by the Stanford-Binet intelligence test)
are normally distributed with a mean of 100 and a standard
deviation of 16. What percentage of the population has an IQ score
between 110 and 124? (Round your answer to the nearest percentage
point.)
Intelligence quotient (IQ) scores are often reported to be normally distributed with a mean of 100...
Intelligence quotient (IQ) scores are often reported to be
normally distributed with a mean of 100 and a standard deviation of
15. What is the probability of a random person selected
from this population having an IQ score of less
than 95?
Intelligence Quotient (IQ) scores are normally distributed with a mean of 100 and a standard deviation...
Intelligence Quotient (IQ) scores are normally distributed with
a mean of 100 and a standard deviation of 15. If 9 people are
randomly selected, what is the probability they will have a mean
IQ score between 105 and 110
The Intelligence Quotient (IQ) test scores for adults are normally distributed with a population mean of...
The Intelligence Quotient (IQ) test scores for adults are
normally distributed with a population mean of 100 and a population
standard deviation of 25. What is the probability we could select a
sample of 25 adults and find the mean of the sample is more than
110?
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- 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
- Suppose Rialto is the only movie cinema in a small college town, so it is essentially...
ADVERTISEMENT