Answer:
{$3.60; $3.68}
Explanation:
The confidence interval for a sample of size 'n', with mean price 'X' and standard deviation 's' is determined by:

The z-score for a 95% confidence interval is 1.96.
Applying the given data, the lower and upper bounds of the confidence interval are:

The confidence interval for the mean price received by farmers for corn sold in January is:
CI : {$3.60; $3.68}