Answer:
x>2
Step-by-step explanation:
The arrow is facing the right hand side and the point on 2 isn't shaded so it's x greater than 2
The graph that has a slop of -1 and the y-interecept is 4
that graph is the 1st picture and top one
Answer:
function
Step-by-step explanation: A function is the one where you put an input to find x or y
Answer:
a. z-score = -1.2
b. The age 23 years old is -1.2 standard deviations below the mean
c. The age is not unusual
Step-by-step explanation:
a. Transformation to z-score
Mathematically;
z-score = (x - μ)/σ
where σ and μ are the standard deviation and the mean respectively.
From the question, x = 23, μ = 27.2 and σ = 3.5
Let’s put these into the equation;
z-score = (23-27.2)/3.5 = -1.2
b. Interpretation of result
The interpretation is that 23 years old is -1.2 standard deviations below the mean
c. Determination
The age is not unusual. This is because any z-value below -2 or above 2 is considered unusual
-1.2 is above -2 and thus it is not unusual
