PLEASE HELP! LOTS OF POINTS, DUE SOON! Two large, plastic tubs were filled with soil. The soil was shaped to create a mound in each tub. The starting height of each mound was recorded. The tubs were set outside, side by side. The lid was left off of tub A and a lid was placed on top of tub B. Once a day, one ounce of water was poured over the top of each mound for ten days straight. At the end of the ten days the mound heights were recorded and compared. Is this a valid experimental design to test for wind erosion of soil? A) Yes, because dirt is very heavy. B) No, because ten days is not long enough. C) No, since the type of soil was not identified. D) Yes, steps were outlined for condition with one variable changed, lid on or off.

yeet

step-by-step explanation:

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.

c

step-by-step explanation:

c

the number of possible outcomes that do not show a 1 on the first spinner and show the number 4 on the second spinner is 2.

spinner 1 spinner 2

1                     1

1                     2

1                     3

1                     4

2                   1

2                   2

2                   3

2                   4   = not 1, and 4

3                   1

3                   2

3                   3

3                   4 = not 1, and 4

only 2 outcomes have passed the given condition.

step-by-step explanation: