On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 102 and a standard deviation of 18. 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 84. Round your answer to 4 decimal places. c. A school offers special services for all children in the bottom 6% 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:
On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 102 and a standard deviation of 18. 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 84. Round your answer to 4 decimal places. c. A school offers special services for all children in the bottom 6% 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:
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 22PFA
Related questions
Question
![On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 102 and
a standard deviation of 18. Suppose one individual is randomly chosen. Let X = IQ of an individual.
a. What is the distribution of X? X - N(
Round your answer to 4
b. Find the probability that a randomly selected person's IQ is over 84.
decimal places.
c. A school offers special services for all children in the bottom 6% 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:
• Find a Probability [+]
DOD
S
DII
IQR:
Hint:
Helpful videos:
;
8](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F77379e33-cd78-4bf1-a88e-5489bb4fa9c3%2F3e7e35f7-7c0d-446c-8431-021e1c420f4d%2F4e8ki7k_processed.jpeg&w=3840&q=75)
Transcribed Image Text:On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 102 and
a standard deviation of 18. Suppose one individual is randomly chosen. Let X = IQ of an individual.
a. What is the distribution of X? X - N(
Round your answer to 4
b. Find the probability that a randomly selected person's IQ is over 84.
decimal places.
c. A school offers special services for all children in the bottom 6% 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:
• Find a Probability [+]
DOD
S
DII
IQR:
Hint:
Helpful videos:
;
8
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