The biology faculty at a college consists of 6 professors, 10 associate professors, 11 assistant professors, and 4 instructors. If one faculty member is randomly selected, find the probability of choosing a professor or an instructor.

40%

Step-by-step explanation:

4+6=10

4+6+11+4=25

10/25= .4, or a 40% chance

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.