Help me please this is timed Half of the subjects (the study volunteers) were given a placebo. The other half were given the vaccine. This created two groups: the placebo group and the vaccine group. The study used a random process to choose which subjects were assigned to each group. Why would subjects be randomly assigned to the groups?

Read the passage from animal farm. one sunday morning squealer announced that the hens, who had just come in to lay again, must surrender their eggs. napoleon had accepted, through whymper, a contract for four hundred eggs a week. the price of these would pay for enough grain and meal to keep the farm going till summer came on and conditions were easier. when the hens heard this, they raised a terrible outcry. they had been warned earlier that this sacrifice might be necessary, but had not believed that it would really happen. they were just getting their clutches ready for the spring sitting, and they protested that to take the eggs away now was murder. for the first time since the expulsion of jones, there was something resembling a rebellion. led by three young black minorca pullets, the hens made a determined effort to thwart napoleon's wishes. their method was to fly up to the rafters and there lay their eggs, which smashed to pieces on the floor. napoleon acted swiftly and ruthlessly. he ordered the hens' rations to be stopped, and decreed that any animal giving so much as a grain of corn to a hen should be punished by death. the dogs saw to it that these orders were carried out. for five days the hens held out, then they capitulated and went back to their nesting boxes. nine hens had died in the meantime. their bodies were buried in the orchard, and it was given out that they had died of coccidiosis. whymper heard nothing of this affair, and the eggs were duly delivered, a grocer's van driving up to the farm once a week to take them away. which detail from the passage supports the claim that this is an allegory for the great purge? the hens holding out for five days but capitulating the eggs being delivered to the grocer the protesting hens being intentionally starved coccidiosis spreading on the farm

Which two passages in this excerpt from the death of ivan illych does leo tolstoy use to suggest that ivan ilych feels like his life is slipping away from him? "what's the use? it makes no difference," he said to himself, staring with wide-open eyes into the darkness. "death. yes, death. and none of them knows or wishes to know it, and they have no pity for me. now they are playing." (he heard through the door the distant sound of a song and its accompaniment.) "it's all the same to them, but they will die too! fools! i first, and they later, but it will be the same for them. and now they are merry . . the beasts! " anger choked him and he was agonizingly, unbearably miserable. "it is impossible that all men have been doomed to suffer this awful horror! " he raised himself. "something must be wrong. i must calm myself—must think it all over from the beginning." and he again began thinking. "yes, the beginning of my illness: i knocked my side, but i was still quite well that day and the next. it hurt a little, then rather more. i saw the doctors, then followed despondency and anguish, more doctors, and i drew nearer to the abyss. my strength grew less and i kept coming nearer and nearer, and now i have wasted away and there is no light in my eyes.

What can you predict about the rest of the story? a) it will be about an eighteen-year-old girl. b) it will be about the aubignys falling in love. c) it will be about armand aubigny's father taking him to paris. d) it will be about the relationship between arman aubigny and the girl. e) it will be about an economic revolution led by aubigny.