Water costs for households are now a significant expense. A sample of 16 homes (for September) was taken and had a sample mean of $226 with a sample standard deviation of $45. For a 90% Confidence Interval around this estimate of the mean, The Maximum Error (E), using the t calculation. in this case would be:

Group of answer choices

$11.8

$40.0

$7.3

$19.7