Question

will medal

Answer 1

A game at a county fair has a spinning drum holding 15 colored plastic balls: some white, some green, and some red. Every time the drum spins, one ball drops out, its color is recorded, and then the ball is placed back in the drum. The table shows the results after 15, 150, and 1500 spins.

What is the best estimate of the number of white balls in the drum?

Outcome Number of trials
15 150 1500
white 5 61 680
green 9 74 713
red 1 15 107




A.
1

B.
4

C.
6

D.
7

Answer 2

c

Answer 3

@Ammarah

Answer 4

@amistre64

Answer 5

what is the mean of the proportions for white?

either that, or they want you to go with the proportion of the highest number of trials

Answer 6

it would be helpful, if you are going to give an option, to explain how you arrived at that solution.

Answer 7

sorry i had a job to do

Answer 8

248

Answer 9

ive got 3 ways to approach this, but they all give different results.

find the mean of the proportions, and multiply that by 15:
15(p1 + p2 + p3)/3

use the highest trial proportion, and multiply that by 15:
15(680)/1500

add up all the results and all the trials, and multiply by 15:
15(5+61+680)/(15+150+1500)

Answer 10

do you know what method you are spose to use? maybe even one not listed?

Answer 11

2

Answer 12

no no no 3

Answer 13

method 3 above gets us 6.7 .... one of the others gives like 6.8 and another gives 5.9

my guess would be either 6 or 7 but both are options so i cant really decide which one would be better

Answer 14

i will go with 6

Answer 15

6 seems fair to me, but im not grading it :)

Answer 16

k