Question 1176847
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Hi
 normal population whose standard deviation is 100 produced a mean of 150:
Yes, z-test
Ho: μ=160
Ha: μ < 160
α=0.05
Using z-test:
 {{{z =blue (150-160)/blue(100/sqrt(300))}}} = -1.7321
p-value = .0416
 .0416 < .05  Reject Ho.

Wish You the Best in your Studies.
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