The standard deviation of quiz scores is 5.6. Describe the quiz scores
that are within one standard deviation of the mean.

We have been given a table of quiz scores whose standard deviation is 5.6. We are asked to find the test scores that are within one standard deviation of the mean.

First of all, we will find the mean of the test scores using average formula.

The scores within one standard deviation would be mean plus one SD and mean minus one SD that is:

Therefore, the quiz scores 17.15 and 28.35 are within one standard deviation of the mean.

450

step-by-step explanation:

you get texts and minutes, so why not

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.