Mean = 5.40 and standard deviation = 2.30 1. Calculate standard error for each of the sample sizes a) Standard error for n= 100 b) Standard error for n=250 c) Standard error for n= 500 d) Standard error for n=1000 2. Find confidence interval using formula for 95% confidence Interval a) Cl for n=100 (use 1.96 value and you will get 2 values- below and above the given mean b) Cl for n=250 c) Cl for n=500 d) Cl for n=1000 3. Find confidence interval using formula for 99% confidence interval a) Cl for n=100 (use 2.58 value and you will get 2 values- below and above the given mean b) Cl for n=250 c) Cl for n=500 d) Cl for n=1000