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12) 12) A random sample of n observations, selected from a normal population, is used to test the null hypothesis Ho a2= 155.
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Answer #1

This is a left tailed test with degrees of freedom as (14 - 1) i.e. 13 and significance level as 0.01

Hence,

Critical chi square value = 4.10691

Rejection region: \chi^2 < 4.10691

Option B is correct.

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