SOLUTION: What critical value for z would be used to test the hypotheses: H_0:μ≥15 versus H_a:μ<15, for  = 0.01 ?
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Question 915393: What critical value for z would be used to test the hypotheses: H_0:μ≥15 versus H_a:μ<15, for = 0.01 ? Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! Ho: mu >= 15
Ha: mu < 15 (claim)
Generally the z-value is found and its corresponding p-value is compared with .01
However,
one-tailed...the 'critical z-value: invNorm(.01) = -2.326
z-value(determined) < -2.326 will cause Ho to be rejected abd the claim accepted
