On a planet far far away from Earth, IQ of the ruling species is normally distributed...
On a planet far far away from Earth, IQ of the ruling species is
normally distributed with a mean of 112 and a standard deviation of
14. Suppose one individual is randomly chosen. Let X = IQ of an
individual.
a. What is the distribution of X? X ~ N(,)
b. Find the probability that a randomly selected person's IQ is
over 115. Round your answer to 4 decimal
places.
c. A school offers special services for all children in the bottom
3% for IQ scores. What is the highest IQ score a child can have and
still receive special services? Round your answer to 2
decimal places.
d. Find the Inter Quartile Range (IQR) for IQ scores. Round
your answers to 2 decimal places.
Q1:
Q3:
IQR:
Homework Answers
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On a planet far far away from Earth, IQ of the ruling species is
normally distributed...
On a planet far far away from Earth, IQ of the ruling species is normally distributed...
On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 118 and a standard deviation of 18. Suppose one individual is randomly chosen. Let X 10 of an individual. a. A school offers special services for all children in the bottom 4% for IQ scores. What is the highest IQ score a child can have and still receive special services? Round your answer to 2 decimal places. b. Find the...
On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 120 and a standard deviation of 15. Suppose one individual is randomly chosen. Let X = IQ of an individual.
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On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 118 and a standard deviation of 18. Suppose one individual is randomly chosen. Let X 10 of an individual. a. A school offers special services for all children in the bottom 4% for IQ scores. What is the highest IQ score a child can have and still receive special services? Round your answer to 2 decimal places. b. Find the...
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