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1.IQ test scores are standardized to produce a normal distribution with a mean of ? =100 and a standard deviation of 15. Find the proportion

1. IQ test scores are standardized to produce a normal distribution with a mean of ? =100 and a standard deviation of 15. Find the proportion of the population in each of the following IQ categories.

A.) IQ greater than 137

B.) IQ between 95 and 115

2. Find the z-score boundaries that lay between the middle 30% in a normal distribution:

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