Answer:
The estimated impact of the experiment of offering test preparation classes is:
= 8 scores (in performance improvement).
Step-by-step explanation:
Average standardized-test score for the first 10 high schools = 69
Average standardized-test score for the second 10 high schools = 70
After 6 months:
Average standardized-test score for the first 10 high schools offered test preparation classes = 78
The change in the average standardized-test score for the first 10 high schools = 9 (78 - 69)
Average standardized-test score for the second 10 high schools not offered test preparation classes = 71
The change in the average standardized-test score for the second 10 high schools not offered the prep = 1 (71 - 70)
The estimated impact of the experiment of offering test preparation classes is:
= 9 - 1
= 8.
A cubic function only has 3 solutions at which x = 0, never 4. For example the function y =
gives the solutions:
x = 0, x = -1 and x = -2
A whole number greater then 10 but less then 15 would be 12
Answer:
n = 0
Step-by-step explanation:
slope = y2-y1/x2-x1
so
-5 -n / 4-3 = -5
-5 -n /1 =-5
-5 - n = -5
n = 0
