What are the critical values for a two-tailed test with a 0.01 level of significance when n is large and the population standard

Question

aleksley [76]

3 years ago

13

What are the critical values for a two-tailed test with a 0.01 level of significance when n is large and the population standard

deviation is known?

Mathematics

1 answer:

Sunny_sXe [5.5K] · Answer 1 · 2022-03-08T20:08:29+03:00

For a two-tailed test we need to halve 0.01, giving 0.005. Then we need to sutract 0.005 from 0.5, giving 0.5 - 0.005 = 0.495. Looking up the p value of 0.495 in an inverse normal probability table we obtain the value z = 2.5758. Therefore the critical values are -2.5758 and 2.5758.