Given the following 5 points 20 10 01 11 and 23 1 What is th

Given the following 5 points: (-2,0), (-1,0), (0,1), (1,1), and (2,3).

1) What is the critical value necessary to detemine a confidence interval for 90% level of confidence?

a) 1.533

b)1.638

c) 2.132

d) 2.353

Solution

The degree of freedom =n-2=5-2=3

Given a=1-0.9=0.1, the critical value is t(0.05, df=3)=2.353 (from student t table)

Answer: d) 2.353