Mr. Yee, a professor at a local university, decides to use observation. He rides in the car with 20 city residents. He notes if he sees the driver texting while driving (a) Provide an advantage of using observation. (b) Provide a disadvantage of using observation. (c) What are the sample and population for Mr. Yee’s research? (d) Suppose 3 of the 20 drivers texted during the observation. What conclusion might Mr. Yee make about the percent of people in the city who text while driving?

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: (1,3) (3,-1) (5,-5) ?

step-by-step explanation:

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2

step-by-step explanation: