Construct a 95% Confidence Interval for the Population Mean, μ

Multiple Choice

Construct a 95% confidence interval for the population mean, μ. Assume the population has a normaldistribution. A sample of 20 part-time workers had mean annual earnings of $3120 with a standard deviationof $677. Round to the nearest dollar.

A) ($2803, $3437)
B) ($1324, $1567)
C) ($2135, $2567)
D) ($2657, $2891)