Empirical Rule

Find the z-scores value corresponding if the location is above the mean by 1/2 standard deviations

If Gonzalo's score is 87, the class average is 82, and the SD is 4, what is Gonzalo's Z-score?

This data is normally distributed. What percent of the data is in the shaded region?

According to the normal distribution, what percent of the population has an IQ between 70 -115

What percentage of the data falls within three standard deviations from the mean?

Assuming this data is normally distributed, what are the mean and standard deviation?

Assuming this data is normally distributed, what are the mean and standard deviation?

According to the empirical rule, what percentage of data falls within 1 standard deviation?

The mean GPA of students in a course at UCDavis is 3.2 with a standard deviation of 0.3. What percent of students in the course have a GPA between 2.9 and 3.8?

The shelf life of a particular dairy product is normally distributed with a mean of 12 days and a standard deviation of 3 days.

About what percent of the products last between 12 and 15 days?