anonymous
  • anonymous
Based on the histogram, how many students were included in the survey? What percentage of the students surveyed babysat for at most three hours last weekend? Show your work.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
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anonymous
  • anonymous
HELP plz
mathteacher1729
  • mathteacher1729
Firstly, do you know how to read this kind of graph? In other words, how many students babysat for 0 to 3 hours? How many for 4-7 hours?

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anonymous
  • anonymous
25?
mathteacher1729
  • mathteacher1729
I meant individually... 0-3 hrs = how many? 4-7 hrs = how many? etc.
anonymous
  • anonymous
0-3 hrs = 20 4-7 hrs = 5 8-11 hrs = 30 12-15 hrs = 25
mathteacher1729
  • mathteacher1729
Correct! Ok, now the next step is this: how many students were included in the survey? Well, that's easy -- just add them all up. :)
anonymous
  • anonymous
20+5+30+35=90?
anonymous
  • anonymous
thank you
anonymous
  • anonymous
http://www.youtube.com/watch?v=BbSmCrvlyrA
mathteacher1729
  • mathteacher1729
You're welcome. But that's the first part of the problem. There is still one part remaining! >What percentage of the students surveyed babysat for at most three hours last weekend? That, too, should be easy. "babysat for AT MOST" three hours means only those who did 0 to 3 hrs. So take that number (the 0-3 hours) and divide it by 90 , the multiply by 100. That's your percent. :)
mathteacher1729
  • mathteacher1729
Oh my, what a sad song. :( Here is a happy song: http://www.youtube.com/watch?v=Ds2RrLNPAHc

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