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Author Question: A light bulb manufacturer claims his light bulbs will last 500 hours on the average. The lifetime of ... (Read 213 times)

mspears3

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on: Jun 24, 2018
A light bulb manufacturer claims his light bulbs will last 500 hours on the average. The lifetime of a light bulb is assumed to follow an exponential distribution.
 a. What is the probability that the light bulb will have to replaced within 500 hours?
  b. What is the probability that the light bulb will last more than 1000 hours?
  c. What is the probability that the light bulb will last between 200 and 800 hours?

Question 2

The correct relationship between SST, SSR, and SSE is given by
 a. SSR = SST + SSE
  b. SSR = SST - SSE
  c. SSE = SSR - SST
  d. None of these alternatives is correct.


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dajones82

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Reply #1 on: Jun 24, 2018
Answer to Question 1

a. .632
b. .135
c. .468

Answer to Question 2

B


mspears3

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Reply 2 on: Jun 24, 2018
Thanks for the timely response, appreciate it

xiaomengxian

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Reply 3 on: Yesterday
Wow, this really help

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