Rank the following data in increasing order and find the position and value of the 65th percentile ...

4. A Math test has a mean of 49 and standard deviation of 10.0. Find the corresponding z scores for: I. a test score of 62 II. a test score of 30 Please show all of your work. 

5. Rank the following data in increasing order and find the position and value of the 65th percentile. Please show all of your work. 2 1 6 3 4 7 0 0 0 7 5 8 

6. The following data lists the average monthly snowfall for January in 15 cities around the US: 15 14 8 3 24 13 13 18 41 17 32 28 21 37 31 Find the mean, variance, and standard deviation.