When performing a onetailed test with a sample size of 20 a

When performing a one-tailed (>) test with a sample size of 20 and ? unknown, the null hypothesis will be rejected at a 5% level of significance if the test statistic is:

Solution

The degree of freedom =n-1=20-1=19

Given a=0.05, the critical value is t(0.05, df=19) =1.729 (from student t table)

Answer: d. greater than 1.729