Question

Psych 2100 (Statistical Methods) Z-scores and Percentile practice problems се A statistician studied the records of rainfall for a particular geographical locale She found that the average monthly rainfall (in inches) was normally distribut with a mean 8.2 and a standard deviation ơ: 2.4. Please answer the following ed 1. What percentage of scores are at or below 12.4? 2. What percentage of scores are at or above 14.3? 3. What percentage of scores are at or above 3.5? 4. What percentage of scores fall between 6.8 and 10.2? 5. What percentage of scores fall between 8.8 and 10.5?

Answer 1