The following of point score during each basketball games last season are shown in the following steam and leave display steam. leaf

3. 6
4. 6
5. 1. 2 4 4 5 6
6. 0 1 1 1 4 6 8
7. 1 3

a) find the mean and standard deviation

b) Use the result for part a to help you find this see scores for each of the following data values in the set
x=54. x=36. x=66​