SOLUTION: Here are our Hypothesis:
Ho: population mean μo = 200
Ha: population mean μo < 200
This will be Left-Tailed test.
Population Standard Deviation σ = 50
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-> SOLUTION: Here are our Hypothesis:
Ho: population mean μo = 200
Ha: population mean μo < 200
This will be Left-Tailed test.
Population Standard Deviation σ = 50
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Question 881136: Here are our Hypothesis:
Ho: population mean μo = 200
Ha: population mean μo < 200
This will be Left-Tailed test.
Population Standard Deviation σ = 50
Significance level is 0.10 (10%).
Critical z-value for 10% significance level is 1.28.
For sample mean x and sample size n use
numbers assigned sample mean x is = 180 and sample size n= 16
1. Calculate your test statistics z-value: z = (x - 200)/(50/√n)
2. Does your sample statistics z value falls in rejection region to the left of -1.28?
3. Will you reject or do not reject Ho? Answer by ewatrrr(24785) (Show Source):
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x= 180 and sample size n= 16
z = (x - 200)/(50/√n) = (180 - 200)/(50/4) = -20/12.5 = -1.6
-1.6 < -1.28
Reject Ho
