Question

Question 3 of 5 (1 point) Use Table F to find the ta/2 value for a 90% confidence interval for the mean when the sample size is 8. 1a/2 -

Answer 1

Given : Sample size=n=8 , Significance level=

a = 0.10

Now , df=degrees of freedom=n-1=8-1=7

Therefore ,

$t_{\alpha/2}=t_{df,\alpha/2}=t_{7,0.10/2}=1.895$ ; From t-table