On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 106 and a standard deviatio
n 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 107. Round your answer to 4 decimal places.
c. A school offers special services for all children in the bottom 7% 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:
Step-by-step explanation: to change a fraction back to a improper fraction
multiply the whole number by the denominator and then add it to the numerator but be careful with negative. You can check this process by changing the improper fraction back to proper. If i change -17/10 i get -1 7/10. the correct answer is -23/10.
