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.

Brenda wrote tally marks for what type of item various customers check out. For books, there are seven groups of 5 tally marks and two individual marks. For videos, there are four groups of 5 tally marks and four individual marks. For magazines, there are three groups of 5 tally marks and four individual marks

Question

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. 

Brenda wrote tally marks for what type of item various customers check out. For books, there are seven groups of 5 tally marks and two individual marks. For videos, there are four groups of 5 tally marks and four individual marks. For magazines, there are three groups of 5 tally marks and four individual marks

anonymous · Answer

attachment

anonymous · Answer

24/80 i think are their any choices

anonymous · Answer

no its a essay question @micheleee13

anonymous · Answer

i guess just say there was 24 videos out of all 80 checkout items. there was a 3/10 chance that she would get a video on the first time she checks out

anonymous · Answer

idk exactly what they want tho

anonymous · Answer

Thank you so much!!!

anonymous · Answer

can you help me with one more? @micheleee13

anonymous · Answer

sure

anonymous · Answer

Shelly delivers the weekly local paper to neighborhoods in her town. House numbers are even on one side of the street and odd on the other. Shelly delivers an equal number of papers to both sides of the street. Although she always aims for the front doorstep, Shelly typically misses on three of the tosses on her route each week. Design and conduct a simulation to estimate the probability that next week, Shelly's three misses will all be at odd-numbered houses. 

Hint: You can set up the experiment using 3 coins to collect the data. Allow one side of the coin to represent Heads (evens) and one other side to represent Tails (odds). 

a) Explain clearly your design of the simulation, including choice of probability tool and description of a single trial. 
b) Conduct the simulation with twenty trials and record the results. 
c) Calculate the experimental probability that all 3 of Shelly's missed papers will be at odd-numbered houses.

anonymous · Answer

@xapproachesinfinity

xapproachesinfinity · Answer

is this a biology problem?

anonymous · Answer

no i meant to put it in math

this is my first day on this site so i kinda don't know what i am doing.

xapproachesinfinity · Answer

well let's try not sure
though lol

anonymous · Answer

okay!

xapproachesinfinity · Answer

the problem said that you can set and experiment of 3 coins
to show the probability of shelly missing three to odd numbered houses

anonymous · Answer

so i just flip a coin 3 times?

xapproachesinfinity · Answer

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we got three probabilities for this experiment of flipping 3 coins