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Find the critical value. Assume that the test is​ two-tailed and that n denotes the number...

Find the critical value. Assume that the test is​ two-tailed and that n denotes the number of pairs of data.

n=​20,

α=0.01

A.±0.447

B.±0.570

C.0.570

D.−0.570

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Answer #1

Solution:

We are given

Test is two tailed test.

Sample size = n = 20

So, degrees of freedom = n – 1 = 20 – 1 = 19

Level of significance = α = 0.01

So, the critical value by using t-table is given as below:

Critical value = ± 2.861

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