The Number of Cars Sold (X) in a Day at Smitty's

Multiple Choice

The number of cars sold (x) in a day at Smitty's Auto Sales is described by the probability distribution in the following table: Compute the variance and standard deviation of the number of people in families per household.

A) Variance=1.25, standard deviation=1.118
B) Variance=1.86, standard deviation=1.364
C) Variance=1.118, standard deviation=1.057
D) Variance=1.50, standard deviation=1.225