Study the information provided below and answer the following question:

In a pilot study, you sought to determine whether the organisational resilience of South African mining companies differs across categories of digital maturity. Accordingly, you gathered data on the digital maturity and organisational resilience of ten South African mining companies from forty top managers of the ten companies. REQUIRED: $4\mathrm{.}2$ State the independent variable $($IV$)$ and dependent variable $($DV$).(2$ marks$)4\mathrm{.}3$ State the level of measurement of the IV and DV$.(2$ marks$)4\mathrm{.}4$ Formulate the null and alternative hypotheses for the study. $(2$ marks