error Q16c sample exam (1 Viewer)

[kzbenn]

Hi, is there an error in question 16c ii of the sample NESA exam for Ext 2? They avoid it in the answers but I think the denominator of the sigma term should be 2k+1

 

[tickboom]

Hi, is there an error in question 16c ii of the sample NESA exam for Ext 2? They avoid it in the answers but I think the denominator of the sigma term should be 2k+1

I've copied Q16 below. From what I can see, the denominator in the sigma term is 2k+1 (highlighted yellow). Do you have something different?

 

[kzbenn]

I've copied Q16 below. From what I can see, the denominator in the sigma term is 2k+1 (highlighted yellow). Do you have something different?

View attachment 29216

Thanks so much! I must have an old copy where it has 2k - 1. I spent so long trying to get the answer!!!