Question

The most common IQ tests have a standardized mean of 100 and a standard deviation of 15. Based on this information, use the empirical rule to answer the following question: If approximately 348 prospective college students are tested for their IQ, approximately how many will fall within one standard deviation of the mean

Answer 1

Explanation:

Empirical Rule establishes that 68% of the population will fall in the interval μ₀ ± σ Then

348*0,68 = 237

237 students will be between ( 100-15 ; 100+15) That is

I = ( 85 ; 115 )