Statistics Homework

Question

For a confidence level of 98% with a sample size of 20, find the critical t value [t_(alpha/2)]. (Report answer in 3 decimal places)

Answer 1

Hi Mekhia,

To solve your his, you will need the degrees of freedom and a t table. For degrees of freedom:

df=n-1

n=sample size

Here, df=20-1=19

Now, go to the t table. Look for 98% confidence at bottom, 19 degrees of freedom in column at left. This gives:

t=2.539, your critical value.

I hope this helps.