Question 1 (a) xi for i=1,..,51 are the number of apples sold in a fruit store in 51 different days. You may assume that the number of apples sold for each day is independent from one another....

Extracted text: Question 1 (a) xi for i=1,..,51 are the number of apples sold in a fruit store in 51 different days. You may assume that the number of apples sold for each day is independent from one another. Σ(xi-70)51i=1=676 E(xi-70)251i=1=23718 (i) Calculate the mean and variance of the dataset. (ii) Using the value of the variance calculated in Question 1(a)(i), calculate the value of Exi251i=1.