Some Data Were Collected About Consumer Loyalty Towards a (Relatively)

Multiple Choice

Some data were collected about consumer loyalty towards a (relatively) new brand of toilet roll - 'Wipe-It' (using a scale from 1 = I'd never go back to 10 = I will always purchase this brand) . The sample was 15,467 people. When looking at the distribution, a skew of 1.23 (SE = 0.65) was identified. The mean rating was 4.78. What is the z-score for the skew in this data?

A) 1.89
B) 0.53
C) -3.92
D) 3.36