Abag contains 9 marbles 3 are green 4 are red and 2 are blue. bob chooses a marble at random and without putting it back chooses one at random. what is the probability that the first marble is blue and the second is green?

5/9

Step-by-step explanation:

a bag contains 9 marbles

3green 4red & 2blue

probability of picking a blue and green marble is 2+3 =5

so therefore the probability of picking a blue and green marble is 5/9

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.

30

step-by-step explanation:

idk

i hope i