phuvn38 phuvn38
  • 21-03-2024
  • Mathematics
contestada

What is the standard deviation of the amount of time cars spent in the drive-through of a certain fast-food restaurant if the mean time is 142.1 seconds and drive-through times are normally distributed?

a. 138.7 seconds
b. 145.5 seconds
c. 150.2 seconds
d. 134.6 seconds

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