3 months plus and minus a specific date is 6 months, or half the year. Assuming random distribution, that's half the deaths. I'm assuming this is a troll question or a "brain teaser".
No studies have been done
50 percent
There are no studies on this
Approximately 7% of all psychological studies involve animals.
NO
No studies have been done
There are no scientific studies of this
There are no scientific studies, so no figures can be quoted
The more rigorous studies have shown different results within a range of 0.6 to 5.4 percent. These studies include Bell-Weinberg, 1970 (~2 percent); Billy-Battelle, 1993 (1.1 percent); Cameron-Ross, 1975-78 (~3 percent); Catania-NABS, 1992 (2 percent); FRI, 1983 (5.4 percent); MacDonald, 1988 (2 percent); NCHS, 1988-91 (3.5 percent); Schmidt, 1987 (0.6 percent); and Trocki, 1988-89 (3 percent).
A birthday attack is a method of code decryption which exploits the birthday paradox - that which explains that within a class of 30 students, there is an assumed probability of two sharing the same birthday of 70 percent.
A phenomenon known as rapid cycling occurs in up to 20% of bipolar I and II patients.
You may have used too much of the reactants. You may have recorded the mass of the reactants or products incorrectly.