For each statement below, indicate whether it is true or false.

1. Two populations with the same age-specific rates of death could have different crude (i.e., overall) rates of death.
2. Two populations with the same crude (i.e., overall) rates of death could have different age-specific rates of death.
3. The process of direct adjustment of rates utilizes stratum-specific rates from the standard population.
4. A crude rate is a weighted average of stratum-specific rates.