The number of no-shows each day for dinner reservations at the Cottonwood Grille is a discrete random variable with the following probability distribution:
Based on this information,the standard deviation for the number of no-shows is about 0.36 customers.

Question

The number of no-shows each day for dinner reservations at the Cottonwood Grille is a discrete random variable with the following probability distribution:
  Based on this information,the standard deviation for the number of no-shows is about 0.36 customers.

Quizplus · Accepted Answer

The standard deviation cannot be a fraction, it should be a whole number. Therefore, the standard deviation cannot be 0.36 customers in this case.

The Number of No-Shows Each Day for Dinner Reservations at the Cottonwood