Answer:
10
Step-by-step explanation:
Basically degrees of freedom are related to sample size (n-1). If the df increases, it also stands that the sample size is increasing; the graph of the t-distribution will have skinnier tails, pushing the critical value towards the mean.
First one is 1 x 10^6
second is 2 x 10^8
third one is 157 times
53y-42y=55
11y=55
Y=55/11 =5