The lifespan of a 100-W fluorescent lamp is define to be normally distributed with o = 30 hrs. A random sample of 15 lamps has a mean life of x = 1015 hours. Construct a 90% lower-confidence bound on the mean life. OHZ 984 OHZ 987 OHZ 1007 984

The lifespan of a 100-W fluorescent lamp is define to be normally distributed with o = 30 hrs. A random sample of 15 lamps has a mean life of x = 1015 hours. Construct a 90% lower-confidence bound on the mean life. OHZ 984 OHZ 987 OHZ 1007 984

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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Estimation

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Question

The lifespan of a 100-W fluorescent lamp is define to be normally distributed with o = 30 hrs. A random sample of
15 lamps has a mean life of x = 1015 hours.
Construct a 90% lower-confidence bound on the mean life.
OHZ 984
Ομ2 987
Ομ 1007
O 984 <H
1002 <U
1001 SH
O HZ 990
1007 SH
Ομ2 1002
987 SH
ΟμΣ 1001
990 SH

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