Provide a normal distribution of iq scores


Intelligence tests are designed to provide a normal distribution of IQ scores with a mean of 100 and a standard deviation of 15.

What IQ scores are at least 1 standard deviation above the mean?

What is the probability of a randomly selected person having IQ score between 129 and 130?

What is the probability of a randomly selected person having an IQ score below 94?

What is the probability of a randomly selected person having a score beween 74 and 109?

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Basic Statistics: Provide a normal distribution of iq scores
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