The mean of the population is 100 and the standard deviation is 15 (These are IQ values by the way.   a. What is the probability of finding a person who has an IQ between 90 and 110? b. What is the probability of finding a person who has an IQ that is less than 90? c. What is the probability of finding a person who has an IQ that is greater than 110?

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A: It is given that  μ - 1.5*σ = 12.1    . . . (1) μ + 3*σ = 17.5    . . . (2)   Note: According to…

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A: Since you have submitted two questions, we'll answer the first question. For the second question…

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A: Sum of deviation  of scores from mean is always zero.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.