In a research report, it was claimed that mice, which generally have an average lifetime of 32 months, will live longer if 30
1) The mice will live longer if 30% of the calories in their diet are replaced.
2) The mice will not live longer if 30% of the calories in their diet are replaced.
3) The mice will live longer regardless of the replacement of calories in their diet.
4) The mice will live longer if 50% of the calories in their diet are replaced.