Question
In: Statistics and Probability
IQ scores in a certain population are normally distributed with a mean of 97 and a...
IQ scores in a certain population are normally distributed with a mean of 97 and a standard deviation of 12. (Give your answers correct to four decimal places.)
(a) Find the probability that a randomly selected person will
have an IQ score between 92 and 98.
(b) Find the probability that a randomly selected person will have
an IQ score above 90
.
Solutions
orchestra answered 1 year agoRelated Solutions
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?
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?
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
The claim is that the IQ scores of statistics professors are normally distributed, with a mean...
The claim is that the IQ scores of statistics professors are
normally distributed, with a mean less than 133. A sample of 11
professors had a mean IQ score of 130 with a standard deviation of
8. Find the value of the test statistic.
The claim is that the IQ scores of statistics professors are normally distributed, with a mean...
The claim is that the IQ scores of statistics professors are
normally distributed, with a mean less than 125. A sample of 19
professors had a mean IQ score of 123 with a standard deviation of
4. Find the value of the test statistic. The value of the test
statistic is .....
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...
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