There are 3 red marbles, 5 green marbles, and 2 blue marbles in a jar. event a is defined as drawing a red marble from the jar on the first draw. event b is defined as drawing a green marble on the second draw. if two marbles are drawn from the bag, one after the other without replacement, what is p(b|a) expressed in simplest form?

Now, martin can reasonably guess that the standard deviation for the entire population of people at the mall during the time of the survey is $1.50. what is the 95% confidence interval about the sample mean? interpret what this means in the context of the situation where 95 people were surveyed and the sample mean is $8. use the information in this resource to construct the confidence interval.