Practice Problems Single population mean

Practice Problems Single population mean - water pressure...

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A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 417 grams setting. It is believed that the machine is under filling the bags. A 47 bag sample had a mean of 414 grams. A level of significance of 0.1 will be used. Assume the standard deviation known to be 12 gms. Is there sufficient evidence to support the manager’s claim that the machine is under filling the bags. An engineer designed a valve that will regulate
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Unformatted text preview: water pressure on an automobile engine. The engineer designed the valve such that it would produce a mean pressure of 5.5 lbs/square inch. It is believed that the valve performs above the specification. The valve was tested on 290 engines and the mean pressure was 5.6 lbs/square inch. Assume the standard deviation is known to be 1 lb/inch. Make the decision to reject or to fail to reject the null hypothesis....
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This note was uploaded on 03/12/2011 for the course DSCI 2710 taught by Professor Hossain during the Spring '08 term at North Texas.

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Practice Problems Single population mean - water pressure...

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