Mr. Smith surveyed 30 students in his homeroom class. Eighteen of the students surveyed said they played a sport. What decimal is equivalent to the fraction of students who play a sport in Mr. Smith's homeroom class?

0.6

Step-by-step explanation:

This could be written as 18/30.

Suppose you get 18 correct on a 30 questions test. what is your grade? To answer this we need to divide 18 by 30. we get 0.6. meaning 60% of Mr. Smith's class plays sports

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.