# data[].attributes.body
Just the T distribution Q was wrong. Well done on the rest

# data[].attributes.body
Your alphas were wrong - remember that for these questions your alpha relates to the confidence interval. So if you have a confidence interval of 95% your alpha would be 0.05. When you don't know the variance - that is when you use a/2

# data[].attributes.body
I don't know why it can't show data in the excel workbook which i upload