Please assist. I would be ever grateful!

Question 8 (2 points) Saved In a small county of 20 households, the number of patients suffering from dementia in a particular family can be modeled by the following box model: [0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,2,2,2,2,3]. Use this box model to answer questions 8 to 11. Calculate the average of this box model. OA) 1 OB ) 18 O C) 0.9 ( D) 0.1 O E) 0.5Question 9 (2 points) Saved Suppose the standard deviation of the box model is 0.887. If you were to select 5 families from this county, how many would you expected to find suffering from dementia? A) 3 O B) 2.5 O c) 0.5 OD) 90 O E) 4.5as. the standard deviation of the box model' IS 0.887 if you res from this county, what IS the standard error of the number ' Question 11 (2 points) Saved What is the probability that the total number of dementia patients in the sample is below 3? A) -0.76 B) 0.2236 C) 0.7764 OD) 0.1587 E) 0.8413 Submit Quiz 11 of 11 questions saved