Answer:
2.25
Step-by-step explanation:
The total frequency is:
20 + 12 + 6 + 2 = 40
Calculate the probability of each score:
P(X=3) = 20/40 = 0.50
P(X=2) = 12/40 = 0.30
P(X=1) = 6/40 = 0.15
P(X=0) = 2/40 = 0.05
So the expected value is:
E = (3)(0.50) + (2)(0.30) + (1)(0.15) + (0)(0.05)
E = 2.25
Answer:
8.68
Step-by-step explanation:
when you minus the two u get 8.68
:)
brainliest? i answered first :) and i only need one more
Answer:
K = (3,3)
After a reflection across the x axis (Vertical reflection), the coordinate becomes (3, -3)
Let me know if this helps!
Answer:
174 because 290 divided by 10 is 29 so then 29 times 6 is 174.
Hope this helped if not sorry.
Step-by-step explanation:
