Suppose that IQ scores have a bell shaped distribution with a mean of 101 and a standard deviation of 12. Using the empirical rule what percentage of IQ scores or no more than 125?

And we want to find the percentage of no more than 125. We can use the z score formula given by:

And using the value given we got:

From the empirical rule we know that within two deviations we have 95% of the values and in the tails 5%.

So we want the percentage below 2 deviations above the mean and the percentage would be (100- 2.5)=97.5%.

Step-by-step explanation:

We know the following parameters:

And we want to find the percentage of no more than 125. We can use the z score formula given by:

And using the value given we got:

From the empirical rule we know that within two deviations we have 95% of the values and in the tails 5%.

So we want the percentage below 2 deviations above the mean and the percentage would be (100- 2.5)=97.5%.

50.6

step-by-step explanation:

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step-by-step explanation: