The time between customer arrivals at a furniture store has an ...

[BRWH]

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]

Answer to Question 1

C

Answer to Question 2

D

[BRWH]

Thank you

[alexisweber49]

No problemo