A library association plans to take an SRS of 150150150 adults from the population of adults in the US to see what proportion of adults sampled believe that public libraries help them learn new things. Suppose that 76\vv, percent of adults in the US believe that public libraries help them learn new things. What are the mean and standard deviation of the sampling distribution of the proportion of US adults who believe that public libraries help them learn new things

Mean: =0.76

SD= (squarerootof) 0.76(0.24)/150

Step-by-step explanation:

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.