Hong runs a large animal shelter. The Amador family adopted a puppy named Birdie from the shelter. When Birdie was adopted, she had been at the shelter for 25 days. At Hong's shelter, the length of stay for puppies has a mean of 43 days and a standard deviation of 13 days. Find the z-score of Birdie's length of stay at the shelter relative to the the lengths of stay for all the puppies at the shelter. Round your answer to two decimal places.

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.