In a test on 2000 electric bulbs, it was found that the life of a particular...
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In a test on 2000 electric bulbs, it was found that the life of a particular make was normally distributed with an average life of 2040 hos & S.D of bohos Estimate the ne of likely to burn for it more than 2150hrs. ii) Less than 1950 hrs. ilik more than 1920 hrs but less than 2160hrs. In a test on 2000 electric bulbs, it was found that the life of a particular make was normally distributed with an average life of 2040 hos & S.D of bohos Estimate the ne of likely to burn for it more than 2150hrs. ii) Less than 1950 hrs. ilik more than 1920 hrs but less than 2160hrs. In a test on 2000 electric bulbs, it was found that the life of a particular make was normally distributed with an average life of 2040 hos & S.D of bohos Estimate the ne of likely to burn for it more than 2150hrs. ii) Less than 1950 hrs. ilik more than 1920 hrs but less than 2160hrs.
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