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Author Question: Which of the following can have an exponential distribution? a. Time between phone calls coming in ... (Read 83 times)

joblessjake

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on: Jun 24, 2018
Which of the following can have an exponential distribution?
 a. Time between phone calls coming in to a technical support desk.
  b. Time until the first customer arrives at the bank in the morning.
  c. Lifetime of a new battery.
  d. All of these choices are true.

Question 2

If the random variable X is exponentially distributed with parameter  = 4, then the probability P(X  0.25), up to 4 decimal places, is
 a. 0.6321
  b. 0.3679
  c. 0.2500
  d. None of these choices.


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dudman123

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

D

Answer to Question 2

A


joblessjake

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Reply 2 on: Jun 24, 2018
Gracias!

xiazhe

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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