Problem 1: A sample of 100 bulbs of brand A gave a mean lifetime of 1200 has with a S.D. of 70hrs, while another sample of 120 bulbs of brand B gave a mean lifetime of 1150 has with a S.D. of 85hrs. Can we calculate that brand A bulbs are superior to brand B hulhs?

Problem 1: A sample of 100 bulbs of brand A gave a mean lifetime of 1200 has with a S.D. of 70hrs, while another sample of 120 bulbs of brand B gave a mean lifetime of 1150 has with a S.D. of 85hrs. Can we calculate that brand A bulbs are superior to brand B hulhs?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.1: Measures Of Center

Problem 9PPS

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