For a random sample of 100 cans of peaches: = 15.9 ounces and s= 0.09 ounces a- Find the margin of error at the 95% confidence level b- Find the margin of error at the 95% confidence level if the sample size was only 20 c- What sample size at the 95% level is necessary to get the margin of error down to 0.005 ounces?