The population mean for a personality test is 85, with a standard deviation of 5. What is the z-score for someone who scored 90?

The sample mean for the test scores was 66, with a standard deviation of 6. What was the z-score for someone who scored 52?

What is the percentage of people who scored between the mean and a z-score of .22?

What is the percentage of people who scored between the mean and a z-score of -1?

What is the percentage of people who scored a z-score of .44 and below?

What is the percentage of people who scored a z-score of 1 and above?

The population average for a personality test is 34, with a standard deviation of 5. What is the percentage of people who scored 32 and below?

The population mean for the IQ test is 100, with a standard deviation of 15. What is the percentage of people who scored 118 and above?

The population mean for the SAT test is 500, with a standard deviation of 100. What percentage of people scored 545 and below?

How does unpredictability and the Law of Large Numbers explain why researchers believe that many variables are normally distributed?

Standard normal distributions are preferred over normal distributions?

What is the minimum number of participants needed to assume that the distribution of the data will be normal?