The desired percentage of silicon dioxide in a certain type of cement is 5.0%. A random sample
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The desired percentage of silicon dioxide in a certain type of cement is 5.0%. A random sample of n = 36 specimens gave a sample average percentage of x̅ = 5.21. Let μ be the true average percentage of silicon dioxide in this type of cement, and suppose that σ is known to be 0.38. Test H0: μ = 5 versus Ha: μ ≠ 5 using a significance level of .01.
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To test the hypothesis we can use the ztest since we know the population standard deviation and have ...View the full answer
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Related Book For 
Introduction To Statistics And Data Analysis
ISBN: 9780495118732
3rd Edition
Authors: Roxy Peck, Chris Olsen, Jay L. Devore
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