Ans:
Here ,let IQ score be x.
mean=100 and SD=15 and Z score is +1.25.

Here, x= Z* SD + mean


Hence raw IQ score is 118.75
Problem 4 (Hint use the z score formula to solve for the raw score) An IQ...
1. The typical IQ test is designed with a mean of 100 and standard deviation of 15. Find Z score corresponding to IQ score of 128 (4 points) Z=
1. The typical IQ test is designed with a mean of 100 and standard deviation of 15. Find Z score corresponding to IQ score of 128 (4 points) Z=
A person must score in the upper 4% of the population on an IQ test to qualify for membership in Mensa, the international high IQ society, If IQ scores are normally distributed with a mean of 100 and a standard deviation of 15, what score must a person have to qualify for Mensa. Draw a diagram and show formula (2 decimals)
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