Episodes of dehydration are common at outdoors music festivals. At a particular large annual event, a first

Question

aid team has recorded over the years 85 cases on average per day. In 2018, during a weekend they observe 78, 86,
79, and 81 cases. Assuming the distributions of cases is normal, can you confirm that the number of cases has
significantly dropped in 2018? Assume alpha=0.10

Answer 1

I'm confused as to what would n (the sample size) be? would it be 85?

Answer 2

n = 4, the values are 78, 86, 79, and 81. Compare to mean = 85.