A box contains three white balls, two black balls, and one red ball. Three balls are drawn at random without replacement. Let Y 1 be the number of white balls drawn, and Y 2 the number of black balls drawn. Find the distribution of Z

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

1     sepan

2     encuentren

3     tenga

4     hable

5   parezca

6   llegue

i think 5 miles per hour

step-by-step explanation:

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0