For each of the following, calculate the standard error of the difference (left(s_{bar{X}_{1}-bar{X}_{2}} ight)). a. (N_{1}=35, s_{1}=1.50,

For each of the following, calculate the standard error of the difference \(\left(s_{\bar{X}_{1}-\bar{X}_{2}}\right)\).

a. \(N_{1}=35, s_{1}=1.50, N_{2}=35, s_{2}=3.25\)

b. \(N_{1}=4, s_{1}=4.30, N_{2}=4, s_{2}=2.10\)

c. \(N_{1}=23, s_{1}=8.10, N_{2}=23, s_{2}=7.50\)

d. \(N_{1}=20, s_{1}=1.20, N_{2}=20, s_{2}=1.75\)