The probability of drawing two red balls from a jar at random without replacement is 310. The probability of drawing a red ball first is 916. What is the probability of drawing a second red ball, given that the first ball drawn was red?.

The correct answer is b, social stratification is needed for a society to exist. marxist theory regarding social stratification is that due to the differing economic capacities among people in society, a natural separation occurs between those that own the means of production and those that sell their labour in the production chain. 

For the sat there is a reading test, math test, and a writing and language test. the act has social studies and science tests.

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.