Which of the following explains why randomized controlled trials are often “double blind”? To allow for genuine observations, since no researcher knows which participants are receiving the treatment and which are not. To decrease bias by ensuring both the participants and researchers do not know who is receiving the treatment and who is not. To increase bias by ensuring both the participants and researchers do not know who is receiving the treatment and who is not. To allow for subjectivity, as the participants who believe they are all taking the treatment will report that they are feeling better or worse.

Choose all that apply. when creating a graph, you should: determine the x- and y- variables label the scale on the x- and y- axes plot the data points draw a line of best fit to represent the data trend

What is the correct lewis structure for chloroform chcl3

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size