Let p = {1, 3, 5, 7} , q = {3, 7, 9, 11} , r = {1, 5, 8, 11} then verify the following
1: p U q = q U p
2: ( p U q ) U r = p U (q U r )
3: p ∩ ( q ∪ r ) = ( p ∩ q ) U ( p ∩ r )
please answer this i am waiting

the answers are in the images

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.