one sample of n = 8 scores has a variance of s2 = 6 and a second sample of n = 8 scores has s2 = 10.if the pooled variance is computed for these two samples, then the value obtained will be

The pooled variance is 8.

Step-by-step explanation:

We are given the following information:

Sample 1:

Sample 2:

Pooled Variance =

Putting the values, we get,

Thus, the pooled variance is 8.

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.