please answer the two questions, thanks!!

For the following situations, decide whether you should do randomized sampling or stratified sampling: 1. You are traveling across the United States and recording the heights of 1000 people to find out the average height in the US. Random sampling Stratified sampling 2. You live in a state that has 20,000 people in one big city and 100 people in a rural area. You and want to sample households in this state to determine how many electronic devices the average household has across all states. Random sampling