determine the margin error for a confidence interval to esti

determine the margin error for a confidence interval to estimate the population mean with n=35 and sigma=40 for 96% confidence level

11.12

13.25

11.83

n=35

sd = 40

standard error = sd/sqrt(n)

Standard error = 40/sqrt(35)

Standard error = 6.76

for 96% confidence level

z = 1.75

margin of error = 1.75 * 6.76 = 11.83