Sum one answer this question i need it : /

Remember, the mean is the average. To find the average of a data set, add the numbers together, then divide by the number of options.

Since there was 4 people here, think about this:

Add the three people's results together.

6+5+4=15

Now, what number, when divided by 4 (because 4 people), gets 4 (for the mean)?

16

16-15=1

So, Hannah blew 1 bubble.

answer: the answer is ann