Match the items of List-I and List-II and indicate the correct matching of the items.

List-I	List-II
a. $$\frac{{{z^2} \cdot \sigma _p^2}}{{{e^2}}}$$	1. Measurement for Kurtosis
b. $$\frac{{\left| {\overline {{X_1}} - \overline {{X_2}} } \right|}}{{\sqrt {\sigma _p^2\left( {\frac{1}{{{n_1}}} + \frac{1}{{{n_2}}}} \right)} }}$$	2. Calculated value of F ratio
c. $$\frac{{{\mu _4}}}{{\mu _2^2}}$$	3. Statistical approach to find out the size of sample
d. $$\frac{{\sigma _1^2}}{{\sigma _2^2}}$$	4. Calculated z value of mean differences