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

Question

Mathematics

Ella Kim

1 November, 13:14

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

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Hodge · Answer 1

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