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

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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After testing their AAA batteries, Duracell found that the lifetime of the batteries are approximated
100
by the cumulative distribution function P(t) =1-
over the interval 0<t<∞, where t is
100 +t?
time measured in hours.
i) First verify that P(t) is a valid c.d.f.
ii) What percentage of batteries last between 15 and 30 hours?
iii) What percentage of batteries last less than 20 hours? More than 20 hours?
iv) Find the median lifetime T.

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