Question

g Determine the critical values for these tests of a population standard deviation. ​(a) A​ right-tailed test with 16 degrees of freedom at the alphaequals0.01 level of significance ​(b) A​ left-tailed test for a sample of size nequals23 at the alphaequals0.1 level of significance ​(c) A​ two-tailed test for a sample of size nequals31 at the alphaequals0.1 level of significance

Answer 1

Answer:

Step-by-step explanation:

We are to find critical values for the test given

a) df =16: Alpha = 0.01  and right tailed

Critical value= 2.583

b) df = 23-1 = 22: alpha = 0.1 and left tailed

critical= -1.717

c)df=31-1 =30:  alpha =0.1:  two tailed

t =1.697

Critical values can be obtained from critical t tables.

Left tailed will have negative sign and right tailed positive