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quiz_07-key - Name:__/§e;‘é‘_____ Stat 383 (01) Quiz:...

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Unformatted text preview: Name:__/§e;‘é‘_____ Stat 383 (01) Quiz: 7 26 Feb 2010 1. The voltages of a brand of batteries is normally distributed with a mean of 1.45V and a standard deviation of 0.25V. Thirty batteries are sampled, and the sample mean is calculated. What is the probability that the sample mean will be less than 1.25V? M: (.cm/ W a . 271/ m=30 Name:L Stat 383 (02) Quiz: 7 26 Feb 2010 1. The diameters for a set of reinforcing bar is normally distributed with a mean of 1.45cm and a standard deviation of 0.25cm. Thirty bars are sampled, and the sample mean is calculated. What is the probability that the sample mean Will be less than 125ch M: (fitrU‘n Q" 1:. ,ZYLM M150 40“" 0A «M (.27 " c; ...
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quiz_07-key - Name:__/§e;‘é‘_____ Stat 383 (01) Quiz:...

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