The owner of a coffee shop has found that the amount spent by customers at the shop is normally distributed with a mean of $5.60 and a standard deviation of $1.30. A random sample of 25 customers is selected. The standard error of the sample mean is (in dollars to 2 decimal places).
The probability that the average amount spent by this sample of customers will be between $5.86 and $6.12 is ( 4 decimal places).
1) standard error of mean... View the full answer