Suppose that 24% of companies in the manufacturing sector of economy have announced plans to expand in the next year (and the other 70% will not). In a sample of twenty companies chosen at random drawn from this population, find the probability that the number of companies which have announced plans to expand in the next year will be 1- precisely two
2- fewer than two
3- two or more​

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.

answer are

step-by-step explanation: