A set of test scores are normally distributed with a mean of 300 and a standard deviation of 18. Between what two scores do 99.7% of the data fall? Write your answer as low number, high number.
A set of test scores are normally distributed with a mean of 300 and a standard deviation of 18. What percent of the scores are between 264 and 300?
The weights of hammers produced in a factory have a mean of 12.2 ounces and a standard deviation 0.08 ounces. A randomly selected hammer weighs 12 ounces. How many standard deviations is this below the mean?
Student A received a score of 445 on a test where the scores are normally distributed with a mean of 450 and a standard deviation of 12. Student B received a score of 170 on a test where the scores are normally distributed with a mean of 175 and a standard deviation of 15. Which student scored better compared to the rest of their
class?
Compared to the normal distribution, a distribution graph is wider. This means that
In a distribution graph, the mean is to the right of the median and the mode. This means that the distribution is