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Author Question: The time between customer arrivals at a furniture store has an approximate exponential distribution ... (Read 107 times)

BRWH

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on: Jun 24, 2018
The time between customer arrivals at a furniture store has an approximate exponential distribution with mean  = 8.5 minutes. If a customer just arrived, find the probability that the next customer will not arrive for at least 20 minutes.
 
  A) 0.904911 B) 0.346230 C) 0.095089 D) 0.653770

Question 2

Use the standard normal distribution to find P(-2.50 < z < 1.50).
 
  A) .8822 B) .5496 C) .6167 D) .9270


alexisweber49

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

C

Answer to Question 2

D


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BRWH

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Reply #2 on: Jun 24, 2018
Thank you


alexisweber49

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Reply #3 on: Jun 24, 2018
No problemo


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