Can you help me to solve these two problems? Thank you.

1. For data {11, 3, 2, 5,4, 8,9}, calculate the 35% trimmed mean. 2. Given data {2, 16, 2, 5, y} with y an arbitrary value, (a) calculate the range as a function of y. (b) calculate the variance as a function of y. (c) nd the value of y that minimizes the variance. ((1) calculate the mean and standard deviation for the value of y found in (c)