5. A population with a mean of 10 has ƩX = 250. How many scores are in the population?
6. A sample of n = 8 scores has a mean of M = 10. If one new person with a score of X =1 is added to the sample, what is the value for the new mean?
7. A sample of n = 5 scores has a mean of M =12. If one person with a score of X = 8 is removed from the sample, what is the value for the new mean?
8. A sample of n = 11 scores has a mean of M = 4. One person with a score of X = 16 is added to the sample. What is the value for the new sample mean?
9. A sample of n = 9 scores has a mean of M = 10. One person with a score of X = 2 is removed from the sample. What is the value for the new sample mean?
10. A population of N = 20 scores has a mean of 15. One score in the population is changed from X = 8 to X = 28. What is the value for the new population mean?