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Confidence interval for the brightness

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Reference no: EM132332033

LEDs and CFLs. Light-emitting diodes (LEDs) and compact florescent lights (CFLs) are lightbulbs that are supposed to last up to fifty times longer than the old fashioned incandescent lightbulbs and also use less energy. Consumes Reports sample eighteen different 60- watt LED and CFL lightbulbs. The following table lists their brightness, in lumens. Calculate and comment on a 99% confidence interval for the brightness.

900 700 865

690 360 680

910 925 750

745 805 735

765 850 865

820 730 635

Reference no: EM132332033

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