Question 911838
Ho: p = 150
Ha: p < 150(claim)
n = 40, xbar = 137, sd = 30.2
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test stat:: z(137) = (137-150)/(30.2/sqrt[40]) = -2.7225
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p-value = P(z < -2.7225) = 0.0032  0r .32%
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Conclusiion: 
Since the p-value is less than 5%, reject Ho.
The test results support the claim.