Question

Data collected over time show that subway trains depart a given platform 70% of the time. You have designed a simulation to generate departure data using the numbers 0, 1, 2, 3, 4, 5, and 6 to represent on-time departures, and 7, 8, and 9 to represent departures that are not on time. Use the random number table below, starting with the first digit of the third row to generate departure data for 25 trains.


Using this simulation, what percentage, rounded to the nearest whole number, of the 25 trains depart on time? the table can be seen here http://prnt.sc/aibrjm

70%
76%
75%
24%

Answer 1

Ok so here's how the table works. Each number in the table is a seperate digit. The first 9 shown means that the first train is late since it says `7, 8, and 9 to represent departures that are not on time.`

the next digit is 2, so the train is on time because `the numbers 0, 1, 2, 3, 4, 5, and 6 to represent on-time departures`

and so on

Answer 2

`You have designed a simulation to generate departure data using the numbers 0, 1, 2, 3, 4, 5, and 6 to represent on-time departures, and 7, 8, and 9 to represent departures that are not on time. `



9 - late
2 - on time
6 - on time
3 - on time
0 - on time
------------
7 - late
8 - late
2 - on time
4 - on time
0 - on time
------------
keep doing this until you have done 25 trains total

Answer 3

once you've done all that work to get the 25 trains, count how many are on time and then divide that number by 25. Finally multiply that result by 100 to convert to a percentage

Answer 4

ok i will try it
thank you

Answer 5

how do i know when i have gotten to the 25 trains, what adds up to the 25 that is what i dont get

Answer 6

when you've used up 25 digits in the table (ie when you get to the end of block #5)

Answer 7

9 - late
2 - on time
6 - on time
3 - on time
0 - on time
------------
7 - late
8 - late
2 - on time
4 - on time
0 - on time
------------
1 on time
9 late
2 on time
6 on time
7 late
----------------
9 late
5 on time
4 on time
5 on time
7 late
------------------
5 on time
3 on time
4 on time
9 late
7 late

Answer 8

looks good

Answer 9

oh wow I didn't read the whole problem

I skipped over the part where it says `starting with the first digit of the third row to generate departure data for 25 trains.`

Answer 10

oh boy lol me neither

Answer 11

Focus on the third row

------------
5 - on time
9 - late
6 - on time
5 - on time
4 - on time
-------------
7 - late
1 - on time
9 - late
6 - on time
6 - on time
-------------
2 - on time
7 - late
3 - on time
8 - late
6 - on time
-------------
5 - on time
0 - on time
0 - on time
0 - on time
4 - on time
-------------
0 - on time
5 - on time
3 - on time
5 - on time
8 - late
-------------

Answer 12

thanks! 19 are on time divided by 25 = .76 = 76% ??

Answer 13

you nailed it

Answer 14

cool thanks you helped me!

Answer 15

you're welcome