Suppose that the lifetimes of old-fashioned TV tubes are normally distributed with a standard deviation of 1.1 years. Suppose also that exactly 20% of the TVtubes die before 4.5 years. Find the mean lifetime of TV tubes. Carry your intermediate computations to at least four decimal places. Round your answer to atleast one decimal place.yearsX S?ContinueacerOllA6ashifttabesc9.SaZ2WS#3Xeсd$4.сr%5ftVgy&-b7hUnj

Given X=4.5 Standard deviations=1.1

Answered: Suppose that the lifetimes of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose that the lifetimes of a certain kind of light bulb are normally distributed with a standard deviation of 110 hours. If exactly 95% of the bulbs die before 925 hours, find the mean lifetime of the bulbs. Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place. hours
QUESTION 15 Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 212, 106, 126, 182, 124, 203, 127, 107, 250 20.0 49.9 56.6 52.9
Suppose that the length of long distance phone calls, measured in minutes, is known to have an exponential distribution with the average length of a call equal to $24 minutes. The 16th percentile is a phone call that lasts minutes.
Suppose that the lifetimes of a certain kind of light bulb are normally distributed with a standard deviation of 110 hours. If exactly 95% of the bulbs die before 925 hours, find the mean lifetime of the bulbs. Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place. hours Check esc 23 $ @ 5 1 y r e
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Calcium levels in people are normally distributed with a mean of 9.7 mgdL and a standard deviation of 0.5 mgdL . Individuals with calcium levels in the bottom 10% of the population are considered to have low calcium levels. Find the calcium level that is the borderline between low calcium levels and those not considered low. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place.
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