Hours of Sleep 5 6 L 8...

Identify the mode.
The number of hours of sleep per night for the past two weeks: 8 , 5 , 7 , 8 , 8 , 6 , 6 , 6 , 6 , 9 , 7 , 8 , 8 , 8 .

So we're trying to figure out the relationship between these two variables. Is it direct variation where I can rewrite it as something like, Why equals K X or is it indirect? Where I would rewrite it is y equals K over X? Well, we have our two variables. It says I'm awake for a hours and I sleep for s hours. Well, there's 24 hours in the day, so we know that 24 must equal a process. Now notice. I have this plus sign in here, and that means no matter how I rearrange this, it's not going to match any of these formats. So the answer here is neither. This is neither direct nor indirect.

Okay, so let's rewrite the falling subtraction as addition. So this six plus negative aids and we'll are eight is larger. So we take on the negative sign and then we have a 26. This is equal to a negritude.

So we'll stop by rewriting subtraction as additions. That's plus negative eight, and I will see that we have the same sign. So we'll keep that sign and then we'll add the opposite values of those values. It's a six close aides so that people to get a 14.

We're being asked to find the difference in the life span between a person who gets less than 6 to 8 hours of sleep per night and a person who smoke cigarettes well, according to our line graph, ah, person who gets less than 68 hours of sleep per night expected to lose one year after life span, as opposed to a person who smoke cigarettes. They're expected to lose 15 years off their life span. So because we're trying to find the difference between these two, ah, values were going to subtract, So we'll have negative one minus negative. 15. Well, these two negatives will become positive so of negative one plus 15 which is equal to 14. So there's a 14 year difference between these two people.