Consider a t distribution with 9 degrees of freedom Compute

Consider a t distribution with 9 degrees of freedom. Compute P (-1.75

Solution

Part(a) 0.886

R-code:

pt(1.75,df=9) - pt(-1.75,df=9)

Output : 0.8859563

Part(b) 1.333

R-code:

qt(0.9,df=17)

This gives the 0.9th quantile of t-distribution with df=17 as output : 1.333379