The batteries from a certain manufacturer have a mean lifetime of 810 hours, with a standard deviation of 70 hours. Assuming that the lifetimes are normally distributed, complete the following statements. (a) Approximately ? 880 hours. of the batteries have lifetimes between 740 hours and (b) Approximately 95% of the batteries have lifetimes between hours and hours.

The batteries from a certain manufacturer have a mean lifetime of 810 hours, with a standard deviation of 70 hours. Assuming that the lifetimes are normally distributed, complete the following statements. (a) Approximately ? 880 hours. of the batteries have lifetimes between 740 hours and (b) Approximately 95% of the batteries have lifetimes between hours and hours.

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 4CYU

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