The answer is c. Because it’s the only one that follows that direct formula
Answer:
D
Step-by-step explanation:
Answer:
μ = 59, σ = 5.1962
Step-by-step explanation:
For a uniform distribution, where a is the minimum and b is the maximum, the mean (or average) is:
μ = (a + b) / 2
And the standard deviation is:
σ = (b − a) / √12
Here, a = 50 and b = 68.
The mean is:
μ = (50 + 68) / 2
μ = 59
And the standard deviation is:
σ = (68 − 50) / √12
σ = 5.1962
Answer:
Step-by-step explanation:
Hello,
let's find a and b reals so that
we identify the terms in
9 = 3a
we identify the terms in x
-18 = 3b + a
we identify the constant terms
-7 = b
so ti goes with a = 9/3 = 3, b = -7
so we can write
so
hope this helps