Question

MEDAL AND FOLLOW

Answer 1

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

Answer 2

@phi

Answer 3

@faylynn

Answer 4

the answers c!!

Answer 5

yup got to be c!

Answer 6

but none of those are answers

Answer 7

ab or c

Answer 8

hmmmm

Answer 9

hmmm

Answer 10

what??

Answer 11

oh... i see... wow.. u have to do all that??

Answer 12

i just dont undeerstand @phi

Answer 13

Its basically just fractions times each other

1/2 x 1/2 x 1/2 = 1/8

Its 1 eighth probability

So 0.125

Or 12.5%

Or 1/8

Answer 14

do ya get it?

Answer 15

yeah.. that right listen to that person!! @kitetenjo

Answer 16

kinda like umm

Answer 17

ohhh i get it like 12.5 % is part of the answer?

Answer 18

pretty much. all it is just fractions times each other.

Answer 19

so the bottom part would be the answer? like the fractions and and percent?

Answer 20

@kitetenjo

Answer 21

6 houses on the street 3 on each side

Answer 22

On second though, I am making it too hard.

Let's just say there are 3 misses.

Answer 23

toss a coin
if you get tails, that means the first miss was on the odd side
if you get heads, that means the first miss was on the even side

Answer 24

ok then what

Answer 25

then do that experiment again for the second miss
and finally a third time for the third miss

write down the results.
that will be the first trial

you have to do that 20 times

Answer 26

aghh this is so confusing

Answer 27

the answer to part (a)

a) Explain clearly your design of the simulation, including choice of probability tool and description of a single trial.

is

there are 3 misses.
we will simulate whether a miss is on the odd or even side by flipping a coin
Heads (even side) and Tails (odd side).
we will toss the coin 3 times to find which side the first, second and third miss happen

Answer 28

ohhhh

Answer 29

and how many times do i have to do it?

Answer 30

oh 20

Answer 31

part (a) explains how to do "one trial"

part (b) says do 20 trials (which means 3*20 or 60 flips of the coin total)
and record the results

part c says count the number of trials where you got 3 tails

the probability will be that number divided by the total number of trials i.e. divided by 20

Answer 32

i have to flipa coin 60 times 0_o

Answer 33

flipping a coin (unless it rolls under the couch) is not hard.

Answer 34

can u just help me with this one plz @phi

Answer 35

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.

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.

Answer 36

add up how many books, videos and magazines were checked out.
example:
books, seven groups of 5 tally marks and two individual marks. means
7 * 5 + 2 = 35+2 or 37 books.

do that for videos and mags
add up all 3 numbers to get a total number
then make a fraction: number of videos divided by total number
that will be the probability of picking a video

Answer 37

oh ok thanks

Answer 38

post your answers, and someone will check that you did it correctly

Answer 39

books,
37 books
videos,
24 videos
magazines,
19
all together = 80
what should i do next @phi

Answer 40

make a fraction: number of videos divided by total number
that will be the probability of picking a video