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Answer to Question #140865 in Statistics and Probability for Margaret
Question #140865
Assume that the population standard is known to obtain a confidence interval for the population mean is reasonable to use
1. The Z-interval procedure
2. The two tall procedure
3. The t-interval procedure
4.The one-tail procedure
5. A sample size greater than 30
1. The Z-interval procedure
2. The two tall procedure
3. The t-interval procedure
4.The one-tail procedure
5. A sample size greater than 30
Expert's answer
It is reasonable to use Z-interval procedure to obtain a confidence interval when the sample size is greater or equal to 30 or the distribution is normal. Thus option 1 is correct.
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