Brenda is training to be a volunteer at her library. She wonders what the probability is that the first item she'll get to check out for a customer will be a video. So, on her first day of training, she tracks what items are checked out. The results are shown here in a tally chart.
Books: 37
Videos: 24
Mgazines: 19
Use Brenda's experimental data to estimate the probability that her first item to check out will be a video. Show and explain your work.
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OpenStudy (anonymous):
@Opcode
OpenStudy (anonymous):
anyone?
thomaster (thomaster):
The total is 37+24+19= 80 items
24 items are video's
Do you know how to calculate the percentage chance?
OpenStudy (nincompoop):
we'll see if opcode helps you first
OpenStudy (anonymous):
no i was wondering that too
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OpenStudy (nincompoop):
if we showed and explained to you how, that'll be our work and not yours :(
OpenStudy (anonymous):
would i have to divide?
thomaster (thomaster):
just divide the part (videos) by the total and multiply by 100% :)
OpenStudy (anonymous):
okay so you are telling me to divide 24 by 80 ?
thomaster (thomaster):
\(\large\dfrac{24}{80}*100\%\)
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OpenStudy (anonymous):
24/80 =0.3 now what do i do?
thomaster (thomaster):
multiply by 100
OpenStudy (anonymous):
so then my answer is 30 ?
thomaster (thomaster):
Yes, the probability is 30% that she'll check out a video first
OpenStudy (anonymous):
ok thanks so much you guys! medal to the both of you!
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