Suriin ang IDNStudy.com para sa mabilis at kaugnay na mga sagot. Magtanong ng anumang bagay at makatanggap ng agarang tugon mula sa aming dedikadong komunidad ng mga eksperto.

given IQ scores are approximately normally distributed with a mean of 100 and standard deviation of 15,the proportion of people with IQs above 130 is?

Sagot :

Answer:

Given that IQ scores are approximately normally distributed with a mean of 100 and a standard deviation of 15, we can determine the proportion of people with IQs above 130. First, we calculate the Z-score for an IQ of 130, which is \( \frac{130 - 100}{15} = 2 \). Referring to the standard normal distribution, the area to the right of a Z-score of 2 is about 0.0228. Therefore, approximately 2.28% of people have an IQ above 130.